1) what happened when japan rejected a trade agreement by the u. s government?

The US used military force to force trade with them.

The United States and Japan could be headed toward a more limited ... nations, initially refused to strike a separate deal with the United States, ... But it's moving along very nicely, we'll see what happens,” the president said.

Explanation:

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.