Answer:
treaty- a ratified agreement between countries or respective nations
Creek Native Americans- the Muskogee tribe are a Native American tribe native to the Southeastern United States
Manifest Destiny- the belief that the United States was destined to expand Westward
What is this about can you tell me what it is so I can answer
<span>Since 1848, the Rio Grande has marked the boundary between Mexico and the United States. It affected domestic policy in that the river had been a cause for a discord between the US and Mexico and special policies were implemented for the area.</span>