A theory of mine is that the vast majority of conflicts, problems, and etc. in the world can be linked back to European colonial powers drawing the borders of countries seemingly on a whim.
WI, and perhaps this is somewhat ASB, Europe and whoever else involved drew the borders with at least a smidgen of interest in the ethnicities of those involved. What would the world look like, specifically the Middle East and Africa, and how would this affect things? Anyone willing to contribute maps would be welcome.