What was one effect of the us protectionism policy after world war i

One effect were the higher taxes on imported goods

United States had a boom in manufacturing as they made most of the things that were exported to Europe or Asia. Since they wanted to protect their manufacturers who made so much, they introduced new tariffs on imported goods to prevent people from purchasing foreign things on American soil and this only made them even more successful.

Both countries had to aprove annexation.

Dbecause i feel like that’s the correct answer