What are you asking for again ??
B. Industrial Revolution
Is the era where people moved to cities and created instrumental pieces of technology.
Answer:
I believe Rome's major downfall was its fall of commerce and trade.
Explanation:
Because Rome's roads were not maintained and cared for (they had a lot of robbers and natural barriers) the trade began to decline. This must have played a major role in the decline of Rome.
Answer:
They use geyser fields for hot water and heat.