Originally humans simply hunted and gathered, but this nomadic lifestyle made having a large family difficult and culture was therefore rarely passed on.
Answer:
lots of things made them leave
Explanation:
Drought was a big reason but also because the people weren't clean which probably caused health problems. There was also alot of pests and while animals among the area. There was also volcanos and violence happening. Archaologists were really unsure they thought they left abruptly, but now they say they were forced out because of the things that were there to endure.
The answer you’re looking for I believe, is Commerce.
Answer:
what's the picture? if you put it on, I'll know what to say
