I got a question fellas, I remember reading how some animal species/sub-species were created after a group of them just kept inbreeding. So im thinking right if you got a group of say 5 families or fewer and they could only ever procreate with each other how long would it take until you basically created a brand new ethnic group?
Now there is always the hapsburg scenario but i wonder if you just kept going despite a hapsburg or 2 happening. I wonder if you would ever get to a point where every single off spring would be physically unable to reproduce and is there a limit to how many times you could create a inbred baby before it doesnt reach the living past birth state.