Why did political and military

I think the answer is A.

Explanation:

"but rather included an ongoing push to establish a stronger U.S. presence in and across the Pacific Ocean. This maritime expansion, driven mostly by commerce, had important implications for U.S. foreign policy"

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

treaties

explanation: