Unit 3 Timeline By pandacannon Feb 16, 1830 Underground railroad begins helping escaped slaves flee Jan 1, 1846 Wilmot Proviso Feb 2, 1848 The trreay of Guadalupe-Hidalgo is signed Mar 20, 1848 The republican Party is founded Feb 16, 1849 H.D. Thoreau wite Civil Disobedience Sep 1, 1850 The Compromise of 1850 is Made Sep 9, 1850 California Becomes a state Sep 18, 1850 The fugitive slave act is passed Feb 16, 1852 Uncle Tom's Cabin is published May 30, 1854 The Kansas- Nebraska Act May 19, 1856 Preston Brooks attacks Charles Sumner May 21, 1856 "Border Ruffians" attack Lawrence Kansas Mar 4, 1857 James Buchanan is Elected President Mar 6, 1857 The Dred Scott decision is announced Dec 7, 1857 South Carolina Secededss from the union Feb 16, 1858 Lincoln and Douglaas debate for the Illinois senate seat Mar 30, 1859 Border Ruffians in Kansas Oct 16, 1859 John Brown attacks the arsenal at Harpers Ferry Dec 20, 1860 Congress rejects lecompton constitution Feb 16, 1861 The confederacy is established Mar 5, 1861 Abraham Lincoln Is elected Apr 12, 1861 Fort Sumter is attacked by confederate forces