1800-1876 By darky0808 Jan 18, 1803 louisiana purchase Dec 15, 1804 lewis and clark expedition 1811 the national road Period: Jun 18, 1812 to Feb 18, 1815 war of 1812 1820 missouri compromise 1835 texas revolution Mar 6, 1836 the alamo Period: 1845 to 1847 Irish immigration 1850 compromise of 1850 1852 uncle toms cabin 1854 kansas nebraska act 1858 abraham lincoln debates stephen A. Douglas Period: 1861 to 1865 American civil war Apr 12, 1861 battle of fort sumter Apr 21, 1861 bull run Casualties: 4,700 2,950 Union 1,750 Confederate Feb 11, 1862 battle of fort donelson Apr 6, 1862 battle of shiloh Aug 28, 1862 second battle of bull run Casualties: 22,180 13,830 Union 8,350 Confederate Sep 17, 1862 battle of antietam Apr 1, 1863 gettysburg Casualties: 51,000 23,000 Union 28,000 Confederate Apr 22, 1864 battle of atlanta Casualties: 12,140 3,641 Union 8,499 Confederate Period: 1865 to 1877 reconstruction era