Which of the following is true of castles built during the early Middle Ages?
A. They were constructed mainly out of stone.
B. They were built by peasants to house their families.
C. They were places of refuge for nobles and peasants in time of war.
D. They were difficult to destroy by fire, and therefore many survive to this day.

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.

d

explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

d. islands off the coast of newfoundland