How did the scramble for Africa in the 1800s and 1900s effect the current borders of Africa?

When they took land during the scramble for Africa they did not look at cultural borders or geographic borders. They just needed a way to say what is the property of what nation. So there were instances where opposing tribes, religions or cultures would meet inside the same borders. Many times this forced people that disliked each other to live with each other instead of away from each other.