Answer:
Factory smoke and other conditions
Explanation:
Back in the second industrial revolution there were many factories being built, and there were a lot of people willing to work for lower wages. Conditions were harsh, as there was a lot of smog, factory smoke, etc. and many people were harmed by the many machines in factories that had no safety precautions. Also, the gases and smoke caused breathing and lung illnesses.
<span>It was a financially sound move, It expanded our military presence in the world, and It expanded our social and political presence in the world. </span>
Answer:
The advent of civilization depended on the ability of some agricultural settlements to consistently produce surplus food, which allowed some people to specialize in non-agricultural work, which in turn allowed for increased production, trade, population, and social stratification.
S<span>cientists believe modern human beings originated in Africa. </span>
