Answer:
Compass: Allowed sailors and navigators to find direction.
Gunpowder: Allowed us to make modern day weapons, such as guns.
Paper: Allowed us to write on a thing that can be mass produced and is efficient to use.
Explanation:
They are both, I believe, considered megapolis's
It was England that was the birth place of the Industrial Revolution, mostly due to the availability of manpower and resources. The Industrial Revolution quickly spread to the US however.
Answer:
The most recent even is the collapse or dissolving of the soviet union.
Explanation: