D. the country's navy uses imported wood and steal to built its ships..!
im not sure about my answer
ihope it will help you dear ♡ :)
People revolted
People wanted to leave the country but couldn't.
Well first and the foremost this was one of the largest migrations in human history. The Bantu moved a lot across Africa and the contact with other cultures enriched their own and in response their culture influenced a lot of others. So the just the massive scale of the migration was what overwhelmed the other tribes.