Chapter 13 & 14 By maddiecat 1821 Mexico gains independence from Spain 1836 Americans are defeated at the Alamo 1841 John Tyler becomes president 1842 Americans and British agree to the Webster Ashburton Treatry 1845 United States annexes Texas 1846 Mexican-American War begins 1848 Treaty of Guadalupe Hidalgo ends the Mexican-American war 1848 Free-soil party is orgnized 1849 California gold rush begins 1853 With the Gadsden Purchase, the united, the United States acquires an additonal 30,000 square miles from Mexico 1854 Congress passes the Kansas-Nebraska Act 1854 Republican Party founded 1856 A pro slavery mob sacks Lawrence Kansas 1856 Charles Summer of Massachutes is caned and seriously injured 1857 U.S. Supreme Court issues Dred Scott 1857 Lecompton Constitution declares that slavery will be allowed in Kansas 1858 Abraham Linclon debates Stephen A. Douglas during the 1858 Illonis sentate race 1859 John Brown and followers stage a failed raid at Harpes Ferry, Virginia, in a attrempt to incite a slave inssurection Period: 1860 to 1861 South Carolina and six other southern states secede from the Union Critteenden Compromise is proposed but fails 1861 Fort Sumter falls to Confedarate forces triggers Civil War Mar 4, 1861 Abraham Lincoln is inagurated president