Which era brought forth ideas of separating powers in a government

The graph shows a demand curve. which most likely accounts for the changes shown on the demand curve?

This is the mountain range known as the alps. which of these statements regarding the alps is true? a) the alps are the largest mountain range in asia. b) the alps protect the roman empire from invasion. c) the alps were key in preventing england from being conquered in warfare. d) the alps prevented the roman empire from taking control of most of europe.

The patriot act made it easier for law enforcement agencies to conduct surveillance under certain circumstances true or false