C. Mongols I believe that it happened in 1223
Answer:we have a lot
Explanation: WE HAVE BACK PAIN. The birth of bipedalism was a high point in human evolution.
WE HAVE WEIRD APEY FEET.
CHILDBIRTH IS TRICKY.
WE CRAVE JUNK FOOD.
A LOT OF US HAVE MENTAL ILLNESS.
OUR THIRD MOLARS ARE A PAIN.
Hope this will help you!! :)
You might want to search on the internet. Also try TonyThePony! Helped me with history question so maybe he can get this one for ya!