Frontier Timeline By Kyle Antonio Jan 24, 1848 The California Gold Rush begins Feb 2, 1848 Mexican American War begins Jan 1, 1849 Asher B. Durand paints "Kindred Spirits" Sep 9, 1850 California becomes the 31st state Mar 3, 1851 Congress passes the Land Claims Act Mar 20, 1852 Uncle Tom's Cabin is published Dec 30, 1853 Gadsen Purchase (the U.S. gets southern New Mexico and Arizona) May 30, 1854 The Kansas-Nebraska Act is passed Jan 1, 1856 Arthur F. Tait paints "The Life of a Hunter: A Tight Fix" Jan 1, 1858 Jasper Francis Cropsey paints "The Backwoods of America"