1. Ancestor origin: More than 40,000 years ago, Indian ancestors arrived in North America via Asia, and then to Central America and South America; When Columbus arrived in what he thought was the New World, about 30 million Indians lived in America.
2. Eskimos went to America: About 10,000 years ago, another group of Asians moved to northern North America, which became Eskimos. The first white people to come to America may be vikings. Some people think that they went to the east coast of North America before 1000 years ago.
3. Indians made a living by hunting and developed primitive agriculture: in the western United States-from Oregon to northern Mexico, from the Pacific coast to the east of the Rocky Mountains-Indians scattered with desert culture made a living by hunting and collecting fruits, but developed primitive agricultural technology.
In the late Archean period, tools and techniques improved, such as slotted stone axes and hammers, and there was a trade system between tribes in different geographical areas.
4. Expansion of life field: During the period of 3000-2000 BC, the climate became warmer, so some Indians followed bison to graze in saskatchewan river and Alberta, and others went further north into the Arctic tundra.
5. Agricultural development and village culture: About2,000 years ago, the indigenous people in the southwestern United States began to grow corn. 200 to 700 years is a cold period, which hinders the development of agriculture. From 700 to 1200, a village-based culture developed in the Mississippi River valley, which was characterized by progressive farming methods and complicated religious ceremonies.
Mogolong's agricultural technology was improved by Anasazi, using rainwater to guide river water to irrigate crops; The Johokan culture in southern Arizona relies on irrigation to maintain its agricultural economy.
Extended data
/kloc-in the 6th century, European colonists who came to America enslaved and even slaughtered Indians in large numbers. 1607, a colonial group of about 100 people established Jamestown in Schabik Beach, which was the first permanent colony established by Britain in North America.
In the next 150 years, many colonists came in and settled in the coastal areas, most of them came from Britain, and some came from France, Germany, the Netherlands, Ireland, Italy and other countries. European immigrants killed Indians on a large scale, plundered their property and occupied Indian land on a large scale.
By 2 1 century, there were about 30 million Indians, and most of their hybrids were descendants of male colonists and local women. In the United States, Indians only account for about 1.2% of the total population.
Baidu Encyclopedia-USA
Baidu Encyclopedia-Indians