What did the Treaty of Guadalupe Hidalgo establish?
A. Rio Grande as the US-Mexican border
B. Slavery
C. More money for United States
D. Nueces River as the US-Mexican border

A. The Rio Grande as the US-Mexican border

Explanation:

This agreement ended the war between Mexico and America. Several points were agreed on the contract, and one of them was the border established on the Rio Grande River. In addition to the United States, it belonged to the territories of California and New Mexico, and in return, the US government paid Mexico millions of dollars. Also, the United States has taken over the $ 3 million that the Mexican government has owed to residents of the area. Mexico has accepted the loss of Texas, and a new state border has been set up near the Rio Grande River.

oil! is what i am assuming

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774