Answer:
B. to refer to periods of time
Explanation:
Historians use terms such as A.D., B.C., decade, and century to to refer to periods of time.
These ten Amendments were introduced to the American Congress in 1789. The purpose of these 10 Amendments is to protect the individuals of the United States–protect their rights to property, their natural rights as individuals, and limit the Government's power over the citizens.
Buddhism had the greatest impact on china , i hope that helps .