The most important effect of migration on population is?

The most important effect of migration on population is "redistribution". Migration refers to the movement of people from one place to another, either within the same country or across different countries. As people move from one place to another, the population in the destination area increases, while the population in the place of origin decreases. This results in the redistribution of the population, with some areas becoming more densely populated while others become less populated. The impact of migration on the population is significant because it can lead to changes in the social, economic, and political landscape of the destination area.