Please i telly beed this answer ​

What step did the united states take after ww2 to prevent another major war?

What bodies of water provided the eastern border of the zhou dynasty? ?

Ineed asap! ! what is the name of the system in which each branch of the u.s government can limit the actions of the other branches? a. perpetual union b. division of powers c. cooperative federalism d. checks and balances