Why did evolution not happen here
Ok I understand that we filled an empty nich. Maybe the great apes did. So for a long time the Americas were isolated from the rest of the world. Not even Native Americans. We even had mega Fauna that weren't in the rest of the world, or have became extinct everywhere els gre. So here is the question why were there no other humanoids, or other great apes for that matter when we had plenty of monkeys in the Americas while we evolved in the old world. First in europe then in Africa. The nich didn't get filled in America it was left empty.
Now the Bonus question is why did we evolve so quickly when before the extinctions they had many more hundred of millions of years yet no humanoid, or even some equavalent to a great ape ever evolved.

