Answer:
the olmec society
Explanation:
the Aztecs adopted a lot culture and lifestyle from the olmec society
To keep our population the same we would need more immigrants or the same amount. Without them our pop would lower. So I would say more?
10. Coal Engines
11. Machines were created to help/deal with most of the previously manual labor.
12. Polution levels rose, disease became easier to spread, and there was alot of smog about from the factories that popped up everywhere around that time.
