Asylum :: the protection granted by a nation to someone who has left their native country as a political refugee

Brain Drain :: the emigration of highly trained or intelligent people from a particular country

Chain Migration :: the social process by which immigrants from a particular area follow others from that area to a particular destination

Circulation :: short-term, repetitive, cyclic movements that recur on a regular basis

Counter-Migration :: a migration in the opposite direction

Guest Workers :: a person with temporary permission to work in another country

Interregional Immigration :: movement within a country from one region to another

Intraregional Immigration :: movement within a country and within a region

Migration Transition :: idea that through development, countries experience a transition over time from predominantly migrant-sending to migrant-receiving, and emigration eventually falls to zero

Mobility :: all types of movement from one place to another

Net Migration :: difference of number of people to immigrate to and emigrate from in a country (i - e)

Quotas (Quota Laws) :: Established limits by governments on the number of immigrants who can enter a country each year

Ravenstein’s Law of Migration :: every migration flow generates a return or counter-migration

Exurbanites :: people who have left the inner city and moved to outlying suburbs or rural areas

Remittance :: Money sent from immigrants to their family/friends in their home countries

Center of Population :: a geographical point that describes a center point of the region’s population

Cyclic Movement :: short-term, repetitive, cyclic movements that recur on a regular basis

Geographic Center :: a country’s physical center point

Transhumance :: the action or practice of seasonally moving livestock around to other pasture grounds in a cycle.

Cotton Belt :: the region of the United States where cotton was the predominant cash crop from the late 18th century into the 20th century

Rust Belt :: the geographic region stretching from New York to the Midwest that was once dominated by the coal industry, steel production, and manufacturing

Sun Belt :: Geographical region in the United States that stretches from Florida and Virginia all the way to Nevada and southern California