India has the longest migration time.

Europeans→ New World (America, Oceania):1At the beginning of the 9th century, on average, 200,000-300,000 Europeans moved to America and Oceania every year. From 65438 to the late 1980s, the average annual emigration population increased to 600,000-700,000, even exceeding 1 10,000.

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.

China people → Southeast Asia and North America: The main performance is that American workers emigrate to Southeast Asia (Malaysia, Philippines, Thailand, etc.). At the same time, Japanese and Indians also migrated to Latin America and Southeast Asia on a small scale.