| Territory of Missouri erected | June 4, 1812 |
| Treaty of Fort Jackson | August 10, 1814 |
| Treaty of Ghent signed | December 24, 1814 |
| Commonwealth of Indiana admitted | December 11, 1816 |
| Madison's veto of internal improvements bill | March 3, 1817 |
| Attack on Fowltown | November 21, 1817 |
| Commonwealth of Mississippi admitted | December 10, 1817 |
| Jackson's "Rhea" letter to Monroe | January 6, 1818 |
| Execution of Ambrister and Arbuthnot | April 29, 1818 |
| Convention with Great Britain as to Oregon | October 20, 1818 |
| Commonwealth of Illinois admitted | December 3, 1818 |
| Tallmadge amendment offered | February 13, 1819 |
| Treaty with Spain as to Florida | February 22, 1819 |
| Decision in McCulloch vs. Maryland | 1819 |
| Commonwealth of Alabama admitted | December 14, 1819 |
| Thomas amendment offered | February 3, 1820 |
| Maine bill approved | March 3, 1820 |
| First Missouri bill approved | March 6, 1820 |
| Commonwealth of Maine admitted | March 15, 1820 |
| Report of Clay's Committee of Thirteen | February 10, 1821 |
| Second Missouri bill approved | March 2, 1821 |
| Jackson, as Governor, takes command in Florida | July 17, 1821 |
| Commonwealth of Missouri admitted | August 10, 1821 |
| Congress of Verona | October-December, 1822 |
| Monroe's veto of internal improvements bill | May 4, 1822 |
| Clay nominated for presidency by the Kentucky legislature | November 18, 1822 |
| "Monroe Doctrine" announced | December 2, 1823 |
| Congressional caucus nominates Crawford | February 14, 1824 |
| Harrisburg convention | March 4, 1824 |
| Jackson's "Coleman Letter" | April 26, 1824 |
| Presidential election in House of Representatives | February 9, 1825 |
| Indian Springs convention | February 12, 1825 |
| Mexico-Columbia treaty | September 25, 1825 |
| The Creek treaty | January, 1826 |
| Abduction of Morgan | September 11, 12, 1826 |
| Protectionist convention at Harrisburg | July 30, 1827 |
| Treaty with Great Britain | August 6, 1827 |
| Tariff bill approved | May 19, 1828 |
| The "South Carolina Exposition" published | 1828 |
| Hayne's speech on Foote's resolution | January 19, 1830 |
| Webster's reply to Hayne | January 26, 1830 |
| Jackson's speech on the Union | April 13, 1830 |
| Veto of the Maysville Road bill | May 27, 1830 |
| Publication of the "Liberator" begun | January 1, 1831 |
| "Address to the People of South Carolina" published | July 26, 1831 |
| The Southampton massacre | August, 1831 |
| Anti-Masonic convention at Baltimore | September 26, 1831 |
| National Republican convention at Baltimore | December 12, 1831 |
| New England Anti-Slavery Society formed | January 6, 1832 |
| Bank of the United States asks re-charter | January 9, 1832 |
| National Democratic convention at Baltimore | May 21, 1832 |
| Calhoun's letter to Governor Hamilton | August 28, 1832 |
| South Carolina convention meets at Columbia | November 19, 1832 |
| Ordinance of nullification | November 24, 1832 |
| President Jackson's nullification proclamation | December 10, 1832 |
| Clay proposes compromise tariff | February 12, 1833 |
| The "Force Bill" approved | March 2, 1833 |
| Compromise tariff bill approved | March 2, 1833 |
| Re-assembling of the South Carolina convention | March 11, 1833 |
| The "Paper read in the Cabinet" | September 18, 1833 |
| Removal of the deposits ordered | September 26, 1833 |
| American Anti-Slavery Society formed | December, 1833 |
| Van Buren nominated by Baltimore convention | May 20, 1835 |
| Charleston, S. C., post-office robbed | July 29, 1835 |
| Provisional declaration of Texan independence | November 7, 1835 |
| Meeting of Texas convention | March 1, 1836 |
| Declaration of Texan independence | March 2, 1836 |
| The Alamo massacre | March 6, 1836 |
| Battle of San Jacinto | April 21, 1836 |
| House adopts the "gag" resolution | May 26, 1836 |
| Commonwealth of Arkansas admitted | June 15, 1836 |
| The "Specie Circular" | July 11, 1836 |
| Senate passes the "expunging resolution" | January 16, 1837 |
| Commonwealth of Michigan admitted | January 26, 1837 |
| Financial panic begins | April, 1837 |
| Murder of Lovejoy | November 7, 1837 |
| Harrisburg "harmony" convention | September 4, 1839 |
| Whig convention at Harrisburg | December 4, 1839 |
| Democratic Republican convention at Baltimore | May 5, 1840 |
| Independent Treasury bill approved | July 4, 1840 |
| Death of President Harrison | April 4, 1841 |
| The Ashburton treaty | August 9, 1842 |
| Veto of National Bank bill | August 16, 1842 |
| Second bank bill vetoed | September 9, 1842 |
| Abolition convention at Buffalo | August 30, 1843 |
| Whitman's party reaches the Columbia | September 5, 1843 |
| Whig convention at Baltimore | May 1, 1844 |
| Democratic convention at Baltimore | May 27, 1844 |
| Commonwealth of Florida admitted | March 3, 1845 |
| Polk's message on Oregon | December 2, 1845 |
| Commonwealth of Texas admitted | December 29, 1845 |
| Mexicans cross the Nueces | April 23, 1846 |
| Arista notifies Taylor of beginning of hostilities | April 24, 1846 |
| Battle of Palo Alto | May 8, 1846 |
| Congress declares war begun by Mexico | May 12, 13, 1846 |
| Treaty with Great Britain as to Oregon | June 15, 1846 |
| Kearny takes Santa Fé | August 18, 1846 |
| Battle of Monterey | September 21-23, 1846 |
| Commonwealth of Iowa admitted | December 28, 1846 |
| Battle of Buena Vista | February 22, 23, 1847 |
| Capture of Vera Cruz | March 27-29, 1847 |
| Battle of Cerro Gordo | April 18, 1847 |
| Battle of Chapultepec | September 12, 13, 1847 |
| Treaty of Guadalupe Hidalgo | February 2, 1848 |
| Democratic convention at Baltimore | May 22, 1848 |
| Special message on Oregon | May 29, 1848 |
| Commonwealth of Wisconsin admitted | May 29, 1848 |
| Abolition convention at Rochester | June 2, 1848 |
| Whig convention at Philadelphia | June 7, 1848 |
| Special message on California and New Mexico | July 6, 1848 |
| Free-soil convention at Buffalo | August 9, 1848 |
| Territory of Oregon organized | August 14, 1848 |
| California convention at Monterey | September 1, 1849 |
| Clay proposes his compromise | January 29, 1850 |
| Calhoun's last speech | March 4, 1850 |
| Webster's speech on the Constitution | March 7, 1850 |
| Death of Calhoun | March 31, 1850 |
| Clayton-Bulwer treaty | April 19, 1850 |
| Clay reports on the compromise | May 8, 1850 |
| Death of President Taylor | July 9, 1850 |
| Commonwealth of California admitted | September 9, 1850 |
| President's message on the fugitive slave law | February 21, 1851 |
| The "Jerry rescue" | October, 1851 |
| Democratic convention at Baltimore | June 1, 1852 |
| Whig convention at Baltimore | June 16, 1852 |
| Death of Clay | June 29, 1852 |
| Free-soil Democratic convention at Pittsburg | August 11, 1852 |
| Death of Webster | October 23, 1852 |
| The Gadsden treaty | December 30, 1853 |
| Douglas reports on Nebraska | January 4, 1854 |
| Kansas-Nebraska bill approved | May 30, 1854 |
| Salt Creek Valley convention | June 10, 1854 |
| The Ostend manifesto | October 18, 1854 |
| Congressional election in Kansas | November 29, 1854 |
| Territorial election in Kansas | March 30, 1855 |
| Kansas legislature meets at Pawnee | July 2, 1855 |
| Robinson's speech at Lawrence | July 4, 1855 |
| Convention at Lawrence, Kansas | August 14, 1855 |
| Convention at Big Springs, Kansas | September 5, 1855 |
| Convention at Topeka, Kansas | September 19, 1855 |
| Convention at Topeka, Kansas | October 23, 1855 |
| Popular vote on the Topeka constitution | December 15, 1855 |
| Robinson elected governor of Kansas | January 5, 1856 |
| President's proclamation on Kansas | February 11, 1856 |
| Kansas Free-state legislature meets | March 4, 1856 |
| Philadelphia convention of the "American party" | February 22, 1856 |
| Congressional committee begins sessions at Kansas City | April 14, 1856 |
| Sumner's speech on the "Crime against Kansas" | May 19, 20, 1856 |
| The sack of Lawrence | May 21, 1856 |
| Brooks's attack on Sumner | May 22, 1856 |
| Massacre at Dutch Henry's Crossing | May 24, 1856 |
| Affair at Black Jack | June 2, 1856 |
| Democratic national convention at Cincinnati | June 2, 1856 |
| Republican national convention at Philadelphia | June 17, 1856 |
| Assault on Sheriff Jones | June 23, 1856 |
| House Committee reports on Kansas | July 1, 1856 |
| Dispersal of Free-state legislature at Topeka | July 4, 1856 |
| Oliver makes minority report on Kansas | July 11, 1856 |
| Treaty at Lawrence | August 17, 1856 |
| Woodson's proclamation in Kansas | August 25, 1856 |
| Destruction of Ossawattomie | August 29, 1856 |
| Whig convention at Baltimore | September 17, 1856 |
| Free-state legislature dispersed at Topeka | January 6, 1857 |
| Territorial legislature meets at Lecompton | January 12, 1857 |
| Dred Scott decision | March 6, 1857 |
| Election of Lecompton constitutional convention | June 15, 1857 |
| Meeting of Free-state convention at Topeka | July 15, 1857 |
| Convention at Lecompton, Kansas | September 7, 1857 |
| Free-state election in Kansas | October 5, 1857 |
| Convention at Lecompton, Kansas | October 19, 1857 |
| Mass-meeting at Lawrence, Kansas | December 2, 1857 |
| Kansas legislature meets at Lecompton | December 7, 1857 |
| Pro-slavery vote on the Lecompton constitution | December 21, 1857 |
| Free-state vote on the Lecompton constitution | January 4, 1858 |
| Buchanan's message on Kansas | February 2, 1858 |
| Commonwealth of Minnesota admitted | May 11, 1858 |
| Vote in Kansas on the English bill propositions | August 2, 1858 |
| Commonwealth of Oregon admitted | February 14, 1859 |