Question

the new japanese constitution after world war ii contained a clause that
promised that japan would remain allies with the us.
prevented japan from having or using an army.
required all citizens to vote in japanese elections.
stopped japan from making special trade agreements.

Explanation:

The post-WWII Japanese Constitution's Article 9 renounces war as a sovereign right and prohibits Japan from maintaining a military force with war potential. The other options are incorrect: there is no clause promising permanent US alliance, mandatory voting, or a ban on special trade agreements in this constitution.

Answer:

prevented Japan from having or using an army.