-
The United States in 1783 and the dates of territorial
acquisitions, i.e. Louisiana 1803
(see
Louisiana Purchase 1803),
Florida 1819 (see
Adams-Onis Treaty),
Texas 1845, Oregon 1846, Mexican Cession 1848 (see
Treaty of
Guadalupe Hidalgo),
Gadsden Purchase
1853
- The dates of the erection of the various States, i.e.
statehood of Vermont 1791,
Kentucky 1792, Tennessee 1796, Ohio 1802, Louisiana 1812, Indiana
1816, Mississippi 1817,
Illinois 1818, Alabama 1819, Maine 1820, Missouri 1821, Arkansas
1836, Michigan 1837,
Florida 1845, Texas 1845, Iowa 1846, Wisconsin 1848, California
1850, Minnesota 1858,
Oregon 1859, Kansas 1861, West Virginia 1863, Nevada 1864, Nebraska
1867, Colorado 1876,
North Dakota 1889, South Dakota 1889, Montana 1889, Washington
1889, Idaho 1890,
Wyoming 1890, Utah 1896, Oklahoma 1907
- The dates on the northern boundary line indicate the year in
which the particular
boundary was fixed.