“Out of Africa” thesis: The contention that Homo sapiens evolved in Africa and migrated to other continents is referred to as the “Out of Africa” thesis. Much of the modern evidence of the “Out of Africa” thesis comes from study of mitochondrial DNA and physical anthropology. The earliest migration out of Africa by homo sapiens is believed to have occurred 60,000 years ago. Still believing that Africa was the most important place for human genetic diversity, the defenders of the “multiregional origin of modern humans” idea argue that hybridization played a much greater role in the evolution of modern humans.
Religion of hunter-foragers: The hunter-foragers in the Paleolithic Stone Age practiced the religion of Animism. The animism that the hunter-foragers practiced allowed them to worship natural things, such as trees, animals, and bodies of water.
Population grown from the last ice age to 5,000 B.C.E: It is estimated that the population grew from the last ice age to 5,000 B.C.E from around 2 million to around 10 million. The climactic changes after the last Ice Age provided great conditions for populations to thrive. Rising temperatures and greater amounts of rainfall allowed for a growth in animal populations, resulting in more food for hunter-foragers.
Sahara Desert: The world’s largest desert is Sahara Desert. The Sahara Desert actually only became a desert around 9500 B.C.E. Before then, a large population had lived there in an environment lush enough to support them.
The Danube River: The Danube River is in Central Europe. Some of the earliest human cultures existed along the Danube River, including the Linear Pottery culture. Even today the Danube River still provides drinking water for a vast amount of Europe.
The Bering Land Bridge: The Bering Land Bridge is thought to have connected Siberia and Alaska. At its greatest point, the Bering Land Bridge is thought to have been around 1,000 miles wide.