What is the impact of the third great human migration on the world?

1. Influencing factors of population migration before modern society

A. In the hunting era, with the progress of human civilization and the development of productive forces.

Humans gradually moved from tropical areas where they lived in early days to temperate and cold temperate forest areas.

B In ancient China, the population migrated from the Yellow River basin to the Yangtze River basin and the Pearl River basin.

2. Influencing factors of population migration in modern society

A. Europeans→ New World (America and Oceania):1At the beginning of the 9th century, on average, 200,000-300,000 Europeans moved to America and Oceania every year. 19 In the late 1980s, the average annual emigration population increased to 600,000-700,000, even exceeding 1 10,000.

B. Africans → America: Portuguese, Spanish, Dutch, British and other colonists engaged in the slave trade for more than 300 years from16th century to the end of18th century, and the total number of slaves transported from Africa to America and Oceania reached about 20 million.

C. China people → Southeast Asia and North America: Mainly manifested in the massive migration of American workers to Southeast Asia (Malaysia, Philippines, Thailand, etc.). At the same time, Japanese and Indians also immigrated to Latin America and Southeast Asia on a small scale.

3. Influencing factors of population migration in modern society (after World War II, it is mainly from rural to urban migration, that is, urbanization movement; Move from poor living conditions to good living conditions. Mainly due to economic reasons, supplemented by social and political reasons) is mainly manifested in:

A. The climax of international migration is coming to an end.

B foreign workers (labor export) have gradually become the main form of international population mobility.

C. the number of international refugees has increased and lasted for a long time. 1996, there are about13.2 million refugees in the world.

D. brain drain from developing countries. Developed countries, such as the United States, Canada and Australia. The favorable economic treatment has attracted a large number of talents from developing countries, especially the Philippines, Pakistan, Egypt and India. (/kloc-most obvious in the middle and late 9th century).

E. the net immigrant area in Europe has become a net immigrant area. From 1950s to 1990s, the number of immigrants was 3.705 million-4.965438 million +0.9 million. For example, Denmark and Norway became net immigrant countries in the 1970s. 1990- 1995, Europe and North America * * accepted 1768.

F. North America and Oceania are still the largest immigrant areas in the world.

G. Latin America has changed from a net immigrant area to a net immigrant area. In the mid-1960s and 1970s, Latin American countries became the largest immigrants in North America.