Let's see all the ethnic tribes before colonization. I attached a picture of Africa before it was colonized and you could see all the different ethnic tribes there were. One of the most ethnically diverse countries was Nigeria which had 300> tribes all killing each other, and when the British came in they split it between the three largest tribes. Colonization put down all these different conflicts between the tribes, but colonization itself had a lot more negatives than positives.
Vikings started war with romans and then vikings took over america and united states. then columbus came and defined it to be america and then united states of america after certain parts of america were named after different herritages and groups of hominids that claimed those lands.