Early 19th Century American Frontier By alecbb53 Feb 17, 1819 Missouri Compromise is Passed Apr 20, 1826 Railroads Appear in the United States Apr 22, 1826 Landscape with Indian Apr 25, 1845 John O'Sullivan Coins the Term Manifest Destiny Period: Apr 25, 1846 to Feb 3, 1848 Mexican-American War Apr 26, 1854 Kansas-Nebraska Act The Kansas-Nebraska Act creates the states of Kansas and Nebraska. This creates a fight over whether or not slavery should be legal in the new territory of Kansas after the Missouri compromise. Apr 22, 1856 A Tight Fix Apr 20, 1862 Valley of the Catawissa in Autumn Period: Apr 20, 1863 to May 10, 1869 Construction of the Trans-Continental Railroad
