Migration Notes

     Mobility is the general term for all movement. Short term and repetitive acts of mobility are called circulation. A permanent act of mobility is known as migration. The difference between immigrants and emigrants is net migration. Ravenstein's laws for distance that migrants move include migrants that relocate a short distance within the same country, and migrants that move to another country. There are two categories in migration which are international and internal. 9% of the world's population are international migrants. The United States has more foreign born residents than any other other country. There were three main eras of immigration in the United States, colonial settlement in the 18th century, European immigration in the 19th and 20th centuries, and Asian and Latin America in the late 20th century to the early 21st century.