The U.S. received the land between the Mississippi and Atlantic north of Florida and south of Canada.
Explanation:
In the Treaty of Paris, the British Crown formally recognized American independence and ceded most of its territory east of the Mississippi River to the United States, doubling the size of the new nation and paving the way for westward expansion.The Treaty of Paris of 1763 ended the French and Indian War/Seven Years' War between Great Britain and France, as well as their respective allies. In the terms of the treaty, France gave up all its territories in mainland North America, effectively ending any foreign military threat to the British colonies there.
The Aztecs though that Cortes was sent by god. They accepted him to keep the gods happy so they'd postpone the end of the world. While it wasn't the end of the world it would be the end of the Aztec Empire.