1. Who was the person responsible for purchasing Alaska for the United
States

The person responsible for purchasing Alaska was William Seward.

Explanation: He bought it from Alaska and many people thought it was a mistake so they called it '' Seward's Folly.''

the question is asking about the things that may have affected and what they effects had on the spanish conquest and settlement of america

explanation:

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.