MIGRATION AND THE TECHNICAL ASPECTOF THE PAST 20,000 YEARS

Climate has effected migration of humans for a long time. In the past 20,000 years early humans have used land bridges to escape the glaciers of the last ice age. There is proof that humans have migrated to five different continents and have gone as far south as Brazil. Once in their new location, humans have learned to adapt to the variety of climates. One crucial migration that took place was the migration of Asia to America between 10,000 to 20,000 years ago. In this migration, humans applied their skills to retreat from the deep freeze of the ice age. Taking advantage of the low sea levels, they crossed the Bering land bridge that connected Siberia to Alaska, which was once covered by the carters of the Earth?s northern oceans.

But then around 13,000 years ago, the glaciers of the ice age began to melt away. That resulted in submerging of the land bridges and improving climate conditions. With this improvement of climate, animal, plant, and human population began to rise. And that was about the time when animals were domesticated for humans to use for the first time.

  In the winter months of the ice ages, humans lived in huts built like tepees for shelter. They were mad from branches and mammoth bones and covered with animal skins and warm animal fur. These winter homes were built carefully so that they could keep themselves warm in the wintertime and so that they could last several years. In the summer months, however, in the summer months, humans lived in sturdy tents that could be moved from place to place. These portable tents were made that way so that they could follow herds of animals that they would hunt. But before the winter months approached, they would return to their winter shelters.

For food in the summer months humans would follow herds of animals like I said before. But that is not all they used for food. They would also eat variety of different seeds, berries, roots, and nuts. They also would go out and catch fish. They never had to struggle to find food because of their great hunting skills. In the winter times, however, humans learned how to store their food. They developed a method of storing meat throughout the winter. They would dig holes in the frosty ground and use it as a deep freezer to keep their meats.

What humans use to do for clothes was that in the cold winter climate, they would learn to soften leather and make warm comfortable clothes sewn together by animal guts. For the summer climate, they would make cooler clothes from woven grass and bark.