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.
The answer you are looking for is B
A landmark case is a court case that is studied because it has historical and legal significance. The most significant cases are those that have had a lasting effect on the application of a certain law, often concerning your individual rights and liberties.
Answer:
Hitler revealed that Germany had begun to construct an air force, and unveiled plans to reinstitute conscription and create a German army of more than half a million men. Britain, France, Italy, and the League of Nations all issued statements condemning Hitler's decision, but did little else to penalize Germany.