AP Review Dates, 1492-1920

1492 Columbus sails the ocean blue
1494 Treaty of Tordesillas
1497 Cabot sails to North America
1513 Ponce de Leon sails to Florida
1521 Cortez conquers Aztecs
1534 Cartier explores St. Lawrence
1535 Pizarro conquers Incas
1539 de Soto explores southern North America
1540 Coronado explores southwest North America
1565 Spanish found St. Augustine
1585 Raleigh founds Roanoke
1588 English beat Spanish Armada
1603 James I King
1607 Jamestown founded
1608 Quebec founded
1609 Hudson explores North America
1610 Jamestown war with Powhatan
1610 Hudson explores St. Lawrence River
1611 Rolfe introduces tobacco to Virginia
1614 Rolfe marries Pocahontas
1614 New Netherlands founded
1617 Virginia exports tobacco
1619 19 African slaves arrive in Virginia
1619 Virginia establishes House of Burgesses
1620 Huge drop in tobacco prices starts
1620 Mayflower Compact
1620 Mayflower lands at Plymouth Rock
1622 Second Jamestown--Powhatan war
1624 James revokes Virginia Charter
1624 Dutch settle Manhattan Island
1625 Charles I king
1626 Dutch buy Manhattan from Indians
1627 Barbados colony founded
1630 Massachusetts Bay Colony founded
1630 Start of 30 year Great Migration
1634 Calvert founds Maryland
1635 Williams founds Rhode Island
1636 Harvard College established
1636 Hooker founds Connecticut
1637 Pequot War in Massachusetts
1637 Hutchinson exiled from Massachusetts Bay
1642 English Civil War starts
1644 Third Jamestown-Powhatan war
1649 Maryland Act for Religious Toleration
1649 Charles I executed; Cromwell rules England
1651 First Navigation Act
1651 First New England 'Praying Town'
1653 First Virginia Indian Reservation
1660 Tobacco price falls below average mortgage
1660 Navigation Act
1660 Stuart Restoration, Charles II king
1661 Barbados Slave Code written
1661 Maryland defines slavery as racial, lifelong
1662 Halfway Covenant
1664 English conquer Dutch New Netherlands
1664 Carteret founds New Jersey
1665 North Carolina founded
1670 South Carolina founded
1675 Metacom's (King Phillip's) War starts in NE
1675 Bacon's Rebellion starts in VA
1679 New Hampshire founded
1681 Penn founds Pennsylvania
1682 laSalle explores Mississippi River
1685 Dominion of New England established
1685 James II king
1688 Glorious Revolution: William & Mary to power
1689 Start of King William's War (to 1697)
1689 Leisler's Rebellion in New York
1690 First newspaper, suppressed after one issue
1690 Royal African Company monopoly ends
1692 Salem Witch Trials
1693 College of William and Mary founded
1696 Board of Trade & Plantations established
1701 Iroquois adopt neutrality toward Europeans
1704 First weekly newspaper: Boston News Letter
1712 New York City slave revolt
1715 Yamasee War in SC
1718 New Orleans founded
1730 Start of Great Awakening
1731 Franklin starts library in Philly
1732 Franklin publishes Poor Richard's Almanac
1732 Oglethorpe founds Georgia
1732 Molasses Act
1734 First horse race in America: SC
1735 Zenger acquitted in seditious libel trial
1735 Edwards leads his first revival
1739 Whitefield arrives in America
1739 Stono Rebellion in South Carolina
1743 Franklin founds American Philosophical Soc.
1750 40% southern colonies black; 5% north
1754 Albany Congress & Plan of Union
1756 Seven Years' War starts
1760 George III king
1763 Treaty of Paris ends Seven Years' War
1763 Pontiac's Uprising
1763 Proclamation of 1763
1764 Currency Act
1764 Sugar Act
1765 Sons of Liberty created
1765 First boycotts of English goods
1765 Stamp Act
1766 Stamp Act repealed; Declaratory Act passed
1766 Mason-Dixon line drawn
1767 Townshend Duties
1768 First Non importation agreements
1768 British troops arrive in Boston
1768 Hancock ship Liberty seized
1768 GB dissolves Massachusetts assembly
1770 Townshend Duties (not tea) repealed
1770 Boston Massacre
1770 Committees of Correspondence created
1770 Quakers prohibit slave holding
1771 Regulators beaten in NC
1772 Gaspee incident
1773 Tea Act
1773 Boston Tea Party
1774 Quebec Act
1774 Coercive Acts
1774 First Continental Congress
1774 Declaration of Rights and Grievances
1774 Continental Assoc. boycotts British goods
1775 Lexington and Concord
1775 Bunker Hill
1775 Lord Dunmore's Proclamation
1775 Quebec attack fails
1775 Second Continental Congress
1775 Washington commands Cont. Army
1776 Battle for New York, Brits win
1776 Cherokee attack North Carolina
1776 British evacuate Boston
1776 Declaration of Independence
1776 Washington beats Hessians at Trenton
1776 Paine publishes Common Sense
1777 Washington wins in New Jersey
1777 Congress approves Articles of Confederation
1777 British lose at Saratoga
1777 Washington at Valley Forge
1778 British attack southern colonies
1778 France recognizes USA
1778 Treaty of Alliance with France
1778 British lose Philly
1779 Judith S. Murray writes on gender equality
1779 Spain declares war on Britain
1780 Dutch declare war on Britain
1780 British take Charleston
1781 Virginia cedes western lands
1781 Articles of Confederation ratified
1781 Cornwallis beaten at Yorktown
1783 Treaty of Paris ends Revolutionary War
1784 Economic Depression
1784 Wheatley's Liberty and Peace
1784 Pennsylvania Packet first daily newspaper
1784 Spain closes lower Mississippi River
1785 Land Ordinance
1786 Shays's Rebellion: Mass
1786 Annapolis Convention
1786 Congress rejects Jay's Treaty with Spain
1786 Virginia Statute for Religious Freedom
1786 First Golf Club in America: South Carolina
1787 Allen forms African Meth. Epis. Ch. in Philly
1787 Northwest Ordinance
1787 Constitutional Convention
1787 Delaware ratifies Constitution first
1788 Federalist Papers published
1788 Constitution ratified by required 9 states
1789 Washington first President
1789 French Revolution starts
1789 Tyler's The Contrast, First US comedy play
1789 Judiciary Act
1790 Capital moves to Philly from New York
1790 Slater opens first cotton mill in Rhode Island
1790 First US ship circumnavigates globe
1790 Hamilton reports on Public Credit
1790 Carroll first Catholic Bishop: Maryland
1790 US Population 4 million, 700,000 slave
1791 Slave Revolt in Santo Domingo
1791 Hamilton Report on Bank & Manufactures
1791 Bank of United States created
1791 Bill of Rights Ratified
1791 Vermont statehood
1792 Kentucky statehood
1793 Washington issues Neutrality Proclamation
1793 Citizen Genet in United States
1793 Democratic Societies founded
1793 Whitney invents cotton gin
1794 Wayne beats Miami at Fallen Timbers
1794 Whiskey Rebellion
1795 Jay's Treaty with Britain
1795 Pinckney's Treaty with Spain
1795 Treaty of Greenville
1796 Tennessee statehood
1796 Washington Farewell Address
1797 Adams President
1797 XYZ Affair
1798 Alien and Sedition Acts
1798 Virginia and Kentucky Resolutions
1798 Quasi War with France
1798 11th Amendment
1798 Department of Navy established
1799 Fries Rebellion in Pennsylvania
1800 Gabriel's Rebellion in Virginia
1800 US Population 5.4 million
1800 Capital moves to Washington from Philly
1800 Jefferson starts Library of Congress
1801 Adams' Midnight appointees
1801 Jefferson President
1801 Marshall appointed Supreme Court Chief Just
1801 Judiciary Act
1801 Cane Ridge, KY Revival
1802 Yazoo Land Settlement
1802 West Point established
1802 Spain blocks New Orleans
1803 Louisiana Purchase
1803 Lewis & Clark expedition starts
1803 Marbury v. Madison
1804 12th Amendment
1804 Burr makes Hamilton dead
1805 Essex case
1805 US Navy defeats Barbary Pirates
1806 Pike sees his peak
1806 Webster publishes his first Dictionary
1807 Embargo Act
1807 Chesapeake Affair
1807 VP Burr acquitted of treason
1807 Livingston & Fulton steamboat Clermont
1808 Importation of slaves prohibited
1809 Madison President
1809 Embargo repealed, Non intercourse passed
1810 US Population 7.2 million
1810 Macon's Bill No. 2
1811 Battle of Tippecanoe
1811 National Road construction begins
1811 New Madrid earthquake
1811 War Hawks elected to Congress
1812 War
1812 Louisiana statehood
1812 Detroit falls to British
1813 Tecumseh dies as does pan-Indian movement
1813 First Lowell mill established
1813 British blockade American coast
1813 Detroit retaken by Americans
1814 Creek War
1814 Treaty of Ghent ends War of 1812
1814 British burn Washington
1814 Key writes Star Spangled Banner
1814 Hartford Convention
1814 British beaten at Plattsburgh
1815 Clay & Madison propose American System
1815 Jackson beats British at New Orleans
1816 Tariff of 1816
1816 Second Bank of United States created
1816 Cotton prices boom
1817 Monroe President
1817 Mississippi statehood
1817 Rush-Bagot Agreement with Britain
1817 Phrase 'Era of Good Feelings" coined
1817 American Colonization Society founded
1817 Erie Canal started
1818 Jackson invades East Florida
1819 Alabama statehood
1819 Panic
1819 Adams-Onis Treaty with Spain
1819 Dartmouth v. Woodward
1819 McCuloch v. Maryland
1820 First emigrants to Liberia
1820 73,000 bales of cotton produced
1820 US Population 9.6 million, 1.5 million slave
1820 Missouri Compromise
1821 Waterford Academy--first woman's college
1822 Denmark Vesey Conspiracy in SC
1823 Cooper's The Pioneers
1823 Philadelphia water supply system
1823 Twas the Night Before Christmas written
1823 Monroe Doctrine
1824 Gibbons v. Ogden
1825 Erie Canal finished
1825 Quincy Adams President
1826 American Temperance Society founded
1827 Freedom's Journal: first African-Am newspaper
1828 Calhoun offers Nullification theory
1828 Baltimore & Ohio RR started
1828 Tariff of Abominations
1829 Burt patents typewriter
1829 Jackson President
1829 Jackson introduces spoils system
1830 Jackson vetoes Maysville Road Bill
1830 Indian Removal Act
1830 Webster-Hayne debates
1830 Indian Land Removal Act
1830 Finney preaches in New York: height of 2nd Great Awakening
1830 US Population 12.9 million
1831 Trail of Tears starts
1831 McCormick invents reaper
1831 Smith writes My Country Tis of Thee
1831 de Tocqueville visits US
1831 Nat Turner's revolt in Virginia
1831 Worcester v. Georgia
1831 Garrison publishes Liberator
1831 Anti-Masons hold nominating convention
1831 Horse-drawn bus in New York
1832 Jackson withdraws federal money from BUS
1832 Carroll, last Dec Indep signer, dies
1832 Virginia rejects gradual emancipation
1832 Cholera epidemic
1832 Tariff nullified by South Carolina
1833 American Anti-Slavery Society founded
1833 Compromise led by Clay
1833 First penny newspaper in New York
1834 anti-Jackson men start using name 'Whigs"
1834 First strike at Lowell mills
1835 P.T. Barnum's first exhibition
1835 Arkansas statehood
1836 Gag Rule in Congress starts
1836 Texas declares independence from Mexico
1836 Texas annexation fails
1836 Specie Circular
1837 Van Buren President
1837 Lovejoy murdered by proslavery mobs
1837 Deere's steel plough
1837 Grimke sisters tour for women's rights
1837 Emerson's "American Scholar"
1837 Panic
1837 Caroline Affair
1837 First Professional Cops: Boston
1839 Aroostook War
1839 La Amistad reaches land in US
1840 US Population 17 million, 2.5 million slave
1840 1.3 million bales of cotton produced
1840 Independent Treasury Act
1840 Interchangeable part machines wide use
1841 Harrison, no wait, Tyler President
1841 Dix proposes prison reform
1841 Tyler vetoes new BUS & internal improvements
1842 Poe's "Murders in Rue Morgue"
1842 Webster-Ashburton Treaty
1843 Dix report on prison conditions
1844 Texas annexation fails again
1844 Methodists & Baptists split North & South
1844 Morse sends first telegraph message
1845 Polk President
1845 US Naval Academy opens
1845 Florida statehood
1845 Texas statehood, finally
1846 War with Mexico starts
1846 Howe's sewing machine
1846 First use of anesthesia
1846 Wilmot Proviso
1846 Phrase "Manifest Destiny" first used in Congress
1846 Fremont proclaims Republic in California
1846 Oregon Treaty with Britain
1846 First Baseball game played in New Jersey
1846 Smithsonian Institution opens: Washington, DC
1847 Young leads Mormons to Great Salt Lake
1848 Sutter's Mill gold strike: CA
1848 Free Soil Party formed
1848 Seneca Falls Convention
1848 Treaty of Guadalupe Hidalgo
1849 Taylor President
1849 Cotton price boom
1850 Fillmore President
1850 US Population 23.2 million
1850 Large German and Irish immigration
1850 Compromise
1850 Hawthorne's Scarlet Letter
1850 Christiana Riot in Pennsylvania
1851 First America's Cup Race
1851 Melville's Moby Dick
1851 New York Times opens
1851 Foster's Swanee River
1852 Know Nothing Party founded
1852 Stowe's Uncle Tom's Cabin
1853 Pierce President
1853 Gadsden Purchase
1854 Thoreau's Walden
1854 Ostend Manifesto
1854 Republican Party created
1854 Kansas-Nebraska Act
1855 Whitman's Leaves of Grass
1855 Whitman's Leaves of Grass published
1856 Bleeding Kansas
1856 Bleeding Sumner
1857 Buchannan President
1857 Helper's Impending Crisis of South
1857 RR line between Baltimore & St. Louis
1857 Dred Scot v. Sanford
1857 Congress rejects Kansas' Lecompton Const.
1857 Panic
1857 Otis makes first elevator
1858 Olmstead designs Central Park, NY
1858 Lincoln-Douglas Debates
1859 John Brown's Raid in Virginia
1860 3.8 million bales of cotton produced
1860 US Population 31.4 million, 3.9 million slave
1860 South Carolina Secedes
1860 Knights of Labor founded
1861 Lincoln President
1861 Crittenden Compromise fails
1861 Fort Sumter
1861 Lincoln blockades the south
1861 Trent Affair
1861 First Manassas
1861 Lincoln suspends habeas corpus
1862 Peninsula & 7 Days Campaigns
1862 Second Manassas
1862 Antietam
1862 Preliminary Emancipation Proclamation
1862 Homestead Act
1862 Slavery abolished in Washington
1862 Farragut takes New Orleans
1862 Morrill Land Grant Act
1862 Shiloh
1863 Emancipation Proclamation
1863 New York City Draft Riots
1863 Lincoln proposes 10% plan
1863 Chancellorsville
1863 Vicksburg
1863 Gettysburg
1864 Sherman's march to the sea
1864 Cold Harbor
1864 Wade-Davis Reconstruction Act
1865 Ku Klux Klan founded
1865 Thirteenth Amendment
1865 Pullman sleeping cars invented
1865 Appomattox
1865 Lincoln assassinated
1865 Johnson President
1865 Presidential Reconstruction
1866 Congress passes Civil Rights Act over veto
1866 Ex Parte Milligan
1866 TransAtlantic Cable completed
1867 Reconstruction Act starts Congressional recon.
1867 Tenure of Office Act
1867 US buys Alaska, Midway
1867 First shipment of cattle to Abilene, Kansas
1868 Fourteenth Amendment
1868 Johnson impeached
1868 Burlingame Treaty
1868 Louisa M. Alcott's Little Women
1869 Transcontinental Railroad completed
1869 Grant President
1870 Fifteenth Amendment
1870 Reconsturction Enforcement Act
1870 Census shows 25% US lives in cities
1870 US Population at 38 million
1870 Fifteenth Amendment
1870 Rockefeller founds Standard Oil
1870 Morrill Tariff
1871 Ku Klux Klan Act passed
1871 Alabama Claims
1871 Barnum's first exhibition
1871 Treaty of Washington ends Alabama Claims
1871 Great Chicago Fire
1872 Amnesty Act
1872 yellowstone Park founded
1872 Amnesty Act for Confederates
1873 Slaughterhouse cases
1873 Panic
1873 Congress stops coining silver
1873 "Boss" Tweed arrested and convicted
1874 Democrats win back House of Rep.
1874 Eads Bridge in St. Louis built, largest arch bridge to date
1874 Democrats gain control of House (first time since war)
1875 The Grange has 20,000 clubs, 1 million members
1875 Gold found in Black Hills, Dakota Territory
1875 Civil Rights Act
1875 Pope names John McCloskey first American Cardinal
1875 First Kentucky Derby
1876 U.S. v. Crukshank
1876 U.S. v. Reese
1876 Custer's Last Stand
1876 Baseball's National League founded
1876 Bell patents telephone
1876 American Centennial
1876 Greenback Party founded
1876 Custer and men die at Little Big Horn
1877 Compromise results in Hayes President
1877 Railroad Strikes
1877 Munn v. Illinois
1877 Hayes President after Compromise
1877 Chief Joseph and Nez Perce caught miles shy of Canada
1878 Edison Electric Light Comapny founded
1878 Bland-Allison Act
1878 Edison patents phonograph
1878 American Bar Association founded
1879 Woolworth's Depratment store opens in Utica, NY
1879 Edison patents incandescent lamp
1881 Garfield President, assassinated, Chester Arthur President
1881 Tuskegee Institute founded
1881 American red Cross founded
1881 Sitting Bull surrenders
1882 Standard Oil Trust formed
1882 John L. Sullivan boxing champion
1882 Jessie James killed
1883 National Time Zones created
1883 Pendleton Civil Service Act
1883 Alfred Mahan's New Navy
1883 pebndleton Civil Service Act
1883 Buffalo Bill Cody's first show
1884 Twain's Huckelberry Finn published
1884 Construction of Statue of Liberty started
1885 Grover Cleveland President
1885 Josiah Strong's Our Country
1885 Cleveland President
1885 Washington Momument dedicated
1886 Haymarket Riot
1886 American Federation of Labor founded
1886 Wabash case
1886 Haymarket Riot
1886 Geronimo surrenders
1886 Emily Dickinson dies, her works are unpublished until 1890
1886 American Federation of Labor founded
1887 Dawes Severalty Act
1887 Hatch Act for agricultural experiments
1887 Interstate Commerce Act
1887 US buys rights to Pearl Harbor
1887 US starts naval base at Pearl Harbor
1887 Interstate Commerce Act
1887 Dawes Severalty Act
1887 Hatch Act
1888 East Coast blizzard kills 400
1889 Dakotas, Washington, Montana states
1889 Benjamin Harrison President
1889 First Pan-American Conference
1889 Harrison President
1889 South Fork Dam breaks, kills 2,000 in Johnstown, PA
1889 First Pan-American Conference
1889 North and South Dakota, Montana & Washington statehood
1890 Wyoming and Idaho states
1890 Sherman Anti-Trust Act
1890 McKinley Tariff raises rates
1890 Sherman Silver Purchase Act
1890 Congress passes first Billion Dollar Budget
1890 McKinley Tariff
1890 US Population 62.9 million
1890 Idaho & Wyoming statehood
1890 First Army-Navy football game (Navy 24, Army 0)
1891 Forest Reserve Act creates National Forests
1891 Edison patents motion picture camera
1891 Naismith invents basketball
1892 Homestead Strike
1892 Populist Convention at Omaha
1892 Homestead Strike
1893 Panic
1893 Cleveland President again
1893 Panic
1893 Sherman Act repealled
1893 Anti-Saloon League founded
1893 Frederick J. Turner's Frontier Thesis
1893 Americans overthrow Hawaiian Queen Liliuokalani
1893 Cleveland President again
1893 Hawaiin Revolution
1893 Anti-Saloon League founded
1893 Colorado lets women vote
1894 Pullman Porter Strike
1894 Wilson-Gorman Tariff
1894 Pullman strike
1894 Coxey's Army
1894 First Labor Day holiday
1894 Coxey's Army
1894 Pullman Strike
1895 U.S. v. E.C. Knight
1895 Cleveland buys gold from JP Morgan
1895 Booker T. Washington gives "Atlanta Compromise" speech
1895 Venezuelan Crisis
1895 First Professional Football game (Latrobe 12, Jeanette 0)
1895 American Bowling Congress founded
1895 First Automobile Race in US
1896 Plessy v. Ferguson
1896 Utah statehood
1896 William J. Bryan gives "Cross of Gold" speech
1896 Utah statehood
1896 Gold found in Klondike & Yukon, on Alaksa-Canada border
1896 First Professional Ice Hockey game (St. Nicks 15, Brooklyn 0)
1897 William McKinley President
1897 Dingley Tariff
1897 Maximum Freight Rate decision
1897 McKinley President
1897 Boston subway (first in US) opens
1898 De Lome Letter published
1898 Maine sunk
1898 Spanish-American War starts
1898 US annexes Hawaii
1898 US obtains Puerto Rico
1898 Louisana adopts "grandfather clause" in Constitution
1899 Treaty of Paris
1899 First Open Door Note
1899 United Fruit Company organized in Guatemala
1900 Gold Standard Act
1900 Robert LaFollette elected Gov. of Wisconsin
1900 Second Open Door Note
1900 Baseball's American League founded
1901 U.S. Steel Founded
1901 McKinley assassinated, Teddy Roosevelt President
1901 US arrests Aguinaldo in Philippnies
1901 Hay-Pauncefort Treaty
1901 First Davis Cup (tennis) (US wins)
1901 US Steel founded
1902 Newlands Reclamation Act
1902 First Rose Bowl (Michigan 49, Stanford 0)
1902 Anthracite coal workers strike
1903 First World Series
1903 US aids Panama break away from Colombia
1903 Platt Amendment
1903 US puts Naval Base at Guantanamo Bay, Cuba
1903 First transcontinental automobile journey
1903 Wright Brothers fly at Kitty Hawk
1904 Northern Securities case ends RR trust
1904 Roosevelt Corollary to the Monroe Doctrine
1904 St. Louis holds first US Olympics
1904 Roosevelt Corollary to the Monroe Doctrine
1905 International Workers of the World founded
1905 WEB DuBois leads Niagra Convention
1905 Lochner v. New York
1905 Taft-Katsura Agreement
1905 Portsmouth Conference
1905 Rotary Club founded
1905 Wobblies founded
1906 Hepburn Act
1906 Upton Sinclair's The Jungle
1906 Meat Inspection Act
1906 Pure Food and Drug Act
1906 San Francisco segregates Asian school children
1906 US puts down Cuba revolt
1906 Great San Francisco earthquake and fire
1906 Upton Sinclair's The Jungle
1907 Great White Fleet world tour
1907 Gentleman's Agreement with Japan over immigration
1907 Economic Depression
1907 Oklahoma statehood
1907 Great WHite Fleet sets sail
1908 Muller v. Oregon
1908 First Ford Model T built
1908 Root-Takahira Agreement with Japan over Open Door in China
1908 Ford introduced the Model T
1909 William Taft President
1909 NAACP founded
1909 Payne-Aldrich Tariff
1909 Taft Presidency
1909 Robert Peary et al reach North Pole
1909 Payne-Aldrich Tariff
1910 Mann-Elkins Act
1910 US Population 92.2 million
1910 Boy Scouts of America & Camp Fire Girls founded
1910 Mann-Elkins Act
1910 White Slave Traffic (Mann) Act
1911 Society of American Indians
1911 Standard Oil broken up
1911 Gentleman's Agreement with Japan restricts immigration
1912 US puts down another Cuban revolt
1912 US troops to Nicaragua
1912 Titanic sinks
1912 New Mexico & Arizona statehood
1913 First Assmebly Line at Ford Motors
1913 Woodrow Wilson President as Roosevelt splits Republicans
1913 Sixteenth Amendment
1913 Seventeenth Amendment
1913 Underwood Tariff
1913 Federal Reserve Act
1913 Wilson Presidency
1913 Sixteenth and Seventeenth Amendments
1913 First Mother's Day celebration
1913 Underwood-Simmons Tariff
1913 Federal Reserve Bank Act
1914 Federal Trade Comission
1914 Clayton Anti-Trust Act
1914 Margaret Sanger indicted
1914 US troops invade Mexico
1914 Panama Canal opens
1914 Marcus Garvey founds Universal Negro Improvement Assoc.
1914 Panama Canal opens
1915 Griffith's Brith of a Nation
1915 US troops to Haiti
1915 Coast Guard created
1915 Griffth's Birth of a Nation
1916 Federal Farm Loan Act
1916 US invades Mexico
1916 US troops to Dominican Republic
1917 US buys Virgin Islands
1919 Eighteenth Amendment
1920 Census shows 51% US lives in cities
1920 Nineteenth Amendment