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Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.
Internal migration or domestic migration is human migration within one geopolitical entity, usually a nation-state. Internal migration tends to be travel for education and for economic improvement or because of a natural disaster or civil disturbance.
International migration occurs when people cross state boundaries and stay in the host state for some minimum length of time. Migration occurs for many reasons. Many people leave their home countries in order to look for economic opportunities in another country.
Answer:
1) Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.
2) Internal migration or domestic migration is human migration within one geopolitical entity, usually a nation-state. Internal migration tends to be travel for education and for economic improvement or because of a natural disaster or civil disturbance.
3) International migration occurs when people cross state boundaries and stay in the host state for some minimum length of time. Migration occurs for many reasons. Many people leave their home countries in order to look for economic opportunities in another country.
4) Pull factors “pull” people to a new home and include things like better opportunities. The reasons people migrate are usually economic, political, cultural, or environmental.
5) Push factors may include conflict, drought, famine, or extreme religious activity. Poor economic activity and lack of job opportunities are also strong push factors for migration.
6) According to the 2001 census, 3,084,826 people in India came from Bangladesh. No reliable numbers on illegal immigrants are currently available. Extrapolating the census data for the state of Assam alone gives a figure of 2 million. ... Most of them migrated to the border states, particularly West Bengal and Assam.