The following phenomena belong to population migration: A. Migrants from the Three Gorges Reservoir Area B. Kobayashi went to his aunt's house to play in the summer vacation C. "An Shi Rebellion" trig

The following phenomena belong to population migration: A. Migrants from the Three Gorges Reservoir Area B. Kobayashi went to his aunt's house to play in the summer vacation C. "An Shi Rebellion" triggered North China. Alternating current

This topic studies the relationship between population migration and population mobility. Population migration is the geographical or spatial movement of population between two regions, which usually involves the change of permanent residence from the place of emigration to the place of emigration. Population mobility refers to the movement of people across certain regional boundaries in order not to change their permanent identity. The immigrants from the Three Gorges reservoir area, the "An Shi Rebellion" triggered a large-scale southward migration of the population in northern China, and Kobayashi went to his aunt's house for the summer vacation. During the May 1 Golden Week in China, a large number of Foshan tourists traveled to Guangzhou, which was a population migration. So choose the AC option of this question.