The positive role of immigrants in a country or city.

First, the management and participation in politics and immigration can enhance the governance ability of a country or city, especially promote the process of rule of law in a country or city, and govern the country and the city according to law.

The second is culture. The entry of immigrants can bring new cultures and ideas, and multiculturalism will have some impact on the original culture and can also form a good supplement.

The third is the economy. People have popularity, wealth, circulation and economy.