Eras of texas By Saul the Bazan Period: Sep 23, 1528 to Sep 23, 1690 age of contact Period: Sep 23, 1690 to Sep 23, 1821 spanish colonial Period: Sep 23, 1821 to Sep 23, 1836 mexican national Period: Sep 23, 1835 to Sep 23, 1845 revolution and republic Period: Sep 23, 1845 to Sep 23, 1861 early statehood Period: Sep 24, 1861 to Sep 24, 1874 civil war and reconstruction Period: Sep 24, 1865 to Sep 24, 1900 cotton,cattle,and railrodes Period: Sep 24, 1894 to Sep 24, 1935 age of oil Period: Sep 24, 1929 to Sep 24, 1945 texas in the great depression and th world war 2 Period: Sep 24, 1945 to Sep 24, 1980 civil rights and conservatism Period: Sep 24, 1980 to Sep 24, 2015 present contemporary texas