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Augustus Caesar died at the age of 75 from natural health issues. After his death his adopted son Tiberius Gracchus took rule of the Roman Empire. At the age of 30 he was assassinated.
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(D)The development of stone tools, because the neolithic age has to do with the development of human tools.
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.
