There are many countries in the world, and, most importantly, peoples. And that's fine.
Firstly, despite the fact that we are all different, we are different in character, skin color, preferences and interests, we live in different countries or cities, we are all equal. We each have our own small victories and defeats, we all need love and family. We have the right to education.
Secondly, if there were no diversity of peoples, our life would be boring and monotonous.
If we think about it, we will conclude that no one is worse and no one is better than us. We are different, we are equal.