Explanation+to+Maps

The Mexican territories are gradually being seized by the U.S. since 1783. The map shows the U.S. annexation of the territories until 1959. In 1853, as victors of the Mexican War, U.S. successfully annexes all of the Mexican territories, including Texas (no yellow area on the map since 1853), and by 1959, all of the remaining territories are annexed as official states (dark blue)..
 * Map1**:

As time passes, there are more and more lines dividing the territories and states. These numerous lines across the nation represent the boundaries of counties and districts. The division starts from 1650, and as America expands westward, the districts and counties are divided accordingly in all parts of America.
 * Map 2:**

This map shows the metamorphosis of the U.S. territories into official states (excluding the 13 original colonies). As there have been numerous conflicts with foreign countries and between domestic parties, the names and sizes of the territories change frequently since 1810 until 1920.
 * Map 3**:

This map simply shows which power controls what part of America over time, namely between: Great Britain, France, Spain, United States, Vermont, Russia, Federal Republic of Central America, Republic of Texas, Republic of the Rio Grande, Yucatan, Confederate States of America, Canada, Dominion of Newfoundland. Although not all of these share a major role in the hegemony of America, the map shows that the native Americans were under the control of foreigners for a very long time. Power shifts are very frequent as well as the changes in land sizes and names.
 * Map4:**