Which was a Key feature of early civilizations? A. cities.
B. social equality.
C. steel-making.
D. a system of exchanging goods for money.

Stone mountain was formed during the formation of the blue ridge mountains around 300-350 million years ago and is considered part of the appalachian mountains. it formed as a result of the upwelling of magma from within the earth's crust. this upwelling, or solidified to form the that became stone mountain.

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?

Based on current rates the earths human population is expected to grow how much by 2050