Answer:
Life in Jamestown in the early 1600's was very hard to survive and consisted of disease, danger and death. They built a basic fort to protect themselves from the indians. Only 38 out of 100 survived. They ate pretty much anything and everything they could find.
Explanation:
Yes, it is true that historians believe that the time from prehistory to the development of agriculture spans more than two million years, since it is thought that humans first appeared on Earth roughly six millions years ago.
Columbus and his men encountered indigenous people
Slavic and Scandinavian countries are very rich in resources, and Russia wanted to control most trade in Europe until the collapse of the Soviet Union. More trade = More power and they were still recovering after the HARD losses when the Germans' invaded Leningrad and the war.
When the Monroe Doctrine was written, the US had just formed and was not ready to fight the European powers. Monroe basically asked Europe to stay out of the Western Hemisphere because they were afraid of getting attacked.
The creator, James Monroe, was interested in keeping the United States out of a war it was not prepared for. Though it was out of fear, there was some thinking through; people voted on it, after all.
Note that by "afraid of getting attacked," I not only mean getting attacked through soldiers and cannons but also by taking over nearby areas and competing with the US for natural resources.