Out of the choices given, the one thing that signifies the period known as prehistory was there was no form of writing. The correct answer is C.
The Industrial Revolution is generally considered to have ended in the early 1800's. ... We are currently in the digital revolution, which many say started in the 80's (although a case could be made for before).
<span>economic system with a central authority that makes the major economic decisions</span>
they demanded many restrictions on their trading partners
