The Land and Its Early People. Prehistory – 1519.
Age of Contact. 1519-1689.
Spanish Colonial. 1689-1821.
Mexican Rule. 1821-1835.
Revolution and Republic. 1836-1845.
Early Statehood. 1845-1861.
Civil War and Reconstruction. 1861-1870.
Cotton, Cattle, and Railroads. 1850-1901.
