Answer:
I think the answer is C! I may be wrong but the rest don't seem accurate to the history. Good luck!
I'm pretty sure it's monticello
<span>Cataracts (the white water rapids of the Nile) prevented potential invasions using the River Nile--but they also kept Egyptians from getting very far. The cataracts harmed the Egyptians because it held back ships that tried to move though the River Nile.</span>
if memory serves me, it was a border dispute with Mexico over the Texas territory. The Mexicans attacked an American patrol and that was the start of the conflict. But also idk and I could be wrong.