What are the main reasons for attracting foreign population in world geography?

In different periods, the attractive factors are different.

As far as time is concerned:

1. In ancient times, human beings mainly tended to warm areas with abundant water resources, few natural enemies and plenty of food.

2. In the period of agricultural society, fertile soil and rivers are the main areas where human beings gather.

3. In industrial society, with the development of industrialization, the demand for resources and energy is the main factor that causes population flow.

4. In modern society, human beings often like areas with convenient life and diverse service functions, that is, big cities are the main ones.

At the same time, due to the improvement of transportation network and the progress of transportation, it is more convenient for people to go to big cities, so people with good conditions will go to areas with good environment and more livable outside cities.

From the perspective of space:

In modern society, different regions have different population flows at the same time, that is, different factors attract foreign population. People in developed and developing regions have different ideas.

According to Maslow's hierarchy of needs theory, people will only pursue high-level needs after solving low-level needs.