How did imperialism affect the growth and development of african nations?

As the control by the British in India was becoming stronger and stronger, Indians started to being disappointed about it. They began not to like the situation that it was starting in India by the British, they controlled the economy, they had effects in religion and even established English as their national language. So, slowly people started to unify and wanted to get modernized. Nationalistic feeling started to surface and people started to realize that the system that they were leaving in was not fair for them as it did not give them the right opportunities. That is why they unified, the British imperialism made them outreach their religious differences finally and stick together as a group to overcome the British power and have their own system.