What are ways europeans ran their colonies

One way is  Europeans generally exploited natives in every one of their colonies.

Branches of government, exploiting natives in each of their colonies, and mayor counselling

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.