The Proterozoic division of the geological time scale is an era of the Phanerozoic eon. The Proterozoic division began 2.5 billion years ago and ended 542.0 million years ago.
Answer: Large scale farming and large mechanized equipment.
Explanation:
5 per 1,000 because you subtract the 10 deaths from 15 and get 5.
Answer:
D. The beginning of the Mongolian tribute empire
Explanation:
This changed the sociopolitical because the mongolians went into to cities so they could build an empire destroying and killing numerous innocent people. I strongly think this is the answer because in Baghdad it was the most civilized became ruins in just a matter of days when the Mongolians came.
