it was a period of a lifestyle that revolved around hunting and gathering agriculture. it was also known as the agricultural revolution. it begun about 12,000 years ago.
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.
The Olmec on the Gulf of Mexico.
They searched for El Dorado one of the infamous cities in the andes.
Scientists like Einstein, Bethe, Fermi, Teller, and Bloch emigrated from "Germany" in order to escape persecution and pursue scientific research, since this took place during the rise of the Nazi Party, which was highly anti-Semitic.