That's a bit of a misleading premise to call them homogeneous since they are more on tribal differences.
It'd be like trying to get the Chinese, Japanese and BOTH Koreans to live in the same area, there's quite a lot of differences between them despite being asian.
The wonders a homogeneous population does for social cohesion, security and trust.
It's almost like having borders more porous than a sponge is a bad idea as it lets in corrosive elements...
A homogeneous population of whites or Asians. Africa and South America are very homogeneous, and yet they are corrupt shitholes.
That's a bit of a misleading premise to call them homogeneous since they are more on tribal differences.
It'd be like trying to get the Chinese, Japanese and BOTH Koreans to live in the same area, there's quite a lot of differences between them despite being asian.