While researching a thesis paper on Ronald Reagan's presidency, you discover multiple resources that support your argument. Which response would be most valid and reliable.

The line dividing regions 4 & 5 on this map is known as the "fall line." which of these represents an important factor of the fall line in georgia history? a) it was the first boundary of the georgia after it became a state. b) it was an important source of power due to a change in elevation. c) it was once home to major cities that have since become abandoned. d) it was a dividing line between the united states and native american territories.

Explain how social darwinism impact imperialism.

American reaction to the 9/11 tragedy can be characterized as patriotism. a. true b. false