Between 1790 and 1828, which situation helped cause the change reflected on these maps of South America? (1) The Aztecs regained
control of many areas of South America. (2) South American voters removed Spanish and Portuguese rulers from power. (3) Spain sent conquistadores to South America. (4) Enlightenment and revolutionary ideas spread from Europe and North America to South America.
It created a barrier between the United States territory to the east of the river and English territory to the west. It connected them directly to the French in New Orleans, their biggest supporters during the war.
