1. How did the desire to expand into new markets help push the United States to extend its influence into the Pacific?

A: The desire for new markets led to trade with Japan and the annexation of Hawaii.

2. How did Americans' opinions on overseas expansion begin to change in the 1800s?

A: A desire for world markets and belief in the superiority of white culture led the United States to assert itself as a world power. This resulted in the change of Americans' opinions on overseas expansion.