Includes sections on the following time periods early beginnings to 1740, revolution and independence: 1740-1783, 1783 to 1815, 1815 to 1840, 1840 to 1865, 1865 to 1900, 1900 to 1913, 1913 to 1920, 1920 to 1932, great depression 1933 to 1945, 1945 to 1960, 1960 to the 1980s.