What best describes how Japan changed in the long term as a direct result of US occupation

Japan became a democracy with a free market economy.

Explanation:

For a long period of its past, Japan did not want to trade or be in much contact with the West. This was due to a belief that outside contact could threaten the rule of the leaders, as well as the belief that the West had nothing useful to teach Japan. Nevertheless, when contact with the West began, and particularly contact with the United States increased, Japan adopted many Western values, such as democracy and a free market economy.

Japan became a democracy with a free market economy.