The effect of European colonization have on Indochina is Imperial powers extracted resources to export for their own financial benefit.
Option B
Explanation:
The first phase of European colonization took place in between 16th to 17th century in the southest Asia. European first forcibly took control over the production centres, trade hubs and all the strategic locations.The conquests mainly focused on ports, it allowed foreign rulers to leave taxes and control the prices as per their convenience on many of the Indo china commodities. The second phase of this colonisation is mainly related with defending and growing the competition for commercial outlets and long term control of resources in the southeast Asia.