to define what kinds of scientific study can be done in Antarctica
<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>
Answer:
C. a traditional economy
Explanation:
Civilization developed around rivers because their water provided places to hunt and fish. Also as the rivers flooded the land around them became fertile. This allowed them to support farming.
