Answer:
Correct answer is They were searching for recourse necessary to live.
Explanation:
First option is wrong as early humans weren't that curious to research and exploit lands, as their routine was based on surviving.
Second option is wrong, as they weren't farmers, but hunters and food gatherers.
Third option is correct as they would move to find a place where they could hunt, gather food and find a shelter.
Fourth option is wrong because there was no overpopulation. Actually, most of the Earth was inhabited.
Extreme Nationalism can be shown through the political practice of Fascism. Adolf Hitler's Germany was a Fascist State, and was extremely proud of its German Nation to the point of eliminating anyone who was considered a threat to that pride and way of life.<span />
Multilateral
Please correct me if I'm wrong :)