Changes made by the United States after World War il affected the agricultural system in Japan by

encouraging farmers to form labor unions

allowing farmers to buy the land they farmed

putting farms under government control

causing crop production to decrease

Changes made by the United States after World War Il affected the agricultural system in Japan by "allowing farmers to buy the land they farmed".

Answer: Option B

Explanation:

On top of economic reforms in Japan, the Americans developed democratic reforms after World War II. Japanese farmers leased nearly two-thirds of the land before the war. They did not own the land, they worked for landlords who barely paid them half the crops they grew up. Peasants were poor.

This was hanged up by the American law. They stripped the property from the landowners and redistributed it to the Japanese farmers, so they could own their portion of land. There were also reforms that allowed free trade unions in the industrial sector.