What is the function of nato?

it set human rights standards for all nations.
it was implemented to prevent nuclear war.
it was established to create a balance of power.
it is an agreement signed by participating nations that there will be a mutual defense and protection to an attack on any one of the nations who signed the agreement.

the structure was most likely used for;

c. playing a ball game with stone hoops

the church governed the society after the empire fell.   constantine took charge of rome and ended the confusion which had over religion and made christianity as the only religion and that started ruling the roman empire. he also divided the empire into two and fortified the eastern part.   he ruled the eastern part.