By 1820 the third revolution against Spanish colonialism is beginning under General Augustin de Iturbide in Mexico, whilst in Venezuela General Simon Bolivar also leads a revolt against Spain.
In North America the United States is pressing gradually westwards, contacting the tribes of the Great Plains for the first time and about to begin the great cycle of Plains wars against them.
In the south the United States is also about to begin the suppression of the Seminole, Creek, Cherokee, Choctaw and Chickasaw tribes to annexe their tribal territories.
The enfeebled Spanish empire seeks to hold its colonial possessions at any cost, especially in the Caribbean.
