depends on what you are talking about but Migration can mean "movement from one part of something to another" or "seasonal movement of animals from one region to another"
Migration of skilled workers leads to a greater economic growth of the region. Children get better opportunities for higher education. The population density is reduced and the birth rate decreases.
Migration also delivers major economic benefits to home countries. While migrants spend most of their wages in their host countries – boosting demand there – they also tend to send money to support families back home. Such remittances have been known to exceed official development assistance.
