APUSH Period 5 By rylancoov 1844 Texas Annexed Period: 1846 to 1848 Mexican-American War 1850 Compromise of 1850 1854 Republican Party Founded 1860 Election of Abraham Lincoln Period: Apr 12, 1861 to Apr 9, 1865 American Civil War 1863 Emancipation Proclamation 1863 Battle of Gettysburg 1865 13th Amendment Passed Apr 14, 1865 Assassination of Abraham Lincoln