The growth of port cities in colonies of Southeast Asia brought new immigrants to the region from

Coastal areas

Europe

China and India

Indonesia

Answer: China and India

The growth of port cities in colonies of Southeast Asia brought new immigrants to the region from China and India

Explanation:

Southeast Asia can be partitioned into two geographic areas. The territory parcel, which is associated with India and China, broadens south into what has been known as the Indochina Peninsula or Indochina, a name given to the district by France.

This terrain area comprises of the nations of Vietnam, Laos, Cambodia, Thailand, and Myanmar (Burma). This locale has been affected generally by India and China.