They settled in river valleys because they wanted their crops and soil to be rich and eaiser to water their plants.
Answer:
Raising money was difficult for a small, new country.
Texas needed help defending its borders against continued attacks by Mexico.
Explanation:
Some of the reasons that Texas wanted to become part of the US was for financial help and stability because raising money for them at the time was difficult.
Another reason was for security: They needed a stronger force to protect them against the attacks of the Mexicans which came almost incessantly.
I'm pretty sure (1.) is A, and I know for a fact that (3.) is D because slavery was a regular practice between quarreling tribes. I have no clue what (2.) is. Best of luck.
Answer:
cleopatra vii. it needs to be 20 characters