The theme of geography that is represented by these sentences is movement.
<h3>What is geography?</h3>
Geography refers to the study of places and relationships between people and the environment.
There are major five themes of geography that are Location, Place, Human-Environment Interaction, Movement, and region.
In the given sentence, the theme of geography is movement as it deals with the examination of immigration, emigration, populations, and distribution in regions.
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