Migration
Mobility is most generalized term that refers to all types of movements. Journeying each day to work or school. Weekly visits to local shops. Annual trips to visit relatives who live in a different state. Short term and repetitive acts of mobility are referred to as circulation. Example - college students moving to college each full and returning home each spring. A permanent move to a new location constitutes migration. Emigration is migration from a location. Immigration is migration to a location. Ravenstein's laws for the distance that migrants typically move. Most migrants relocate a short distance and remain within the same country. Long distance migrants to other countries head for major centers of economic activity. Migration can be divided into two categories. International Migration is the permanent move from one country to another. Internal Migration is the permanent move within the same country. Approximately 9 percent of the world's people are international migrants.
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