Answer: C is Indus Valley
and D is China
Explanation:
This map shows the first River Valley civilizations, whose main feature is that they were nations or agricultural civilizations located near a river, which was their development center.
Among these civilizations can be identified on the map the following:
-Mesopotamia (marked as B), which was the oldest civilization (formed around 3500 BC) and grew around the Tigris and Euphrates rivers.
-Egypt (marked as A), whihc was a civilization that created irrigation systems around the Nile River.
-The Indus Valley (marked with C), formed around 3300 B.C. and considered a Bronze Age civilization, which developed around the Indus River in present-day Afghanistan, Pakistan and northwestern India. Being its two most important cities: Harappa and Mohenjo-Daro (now Pakistan).
-The area of the Yellow River, China (marked with D); which was called the Mother River by the inhabitants. This civilization was established around 4000 B.C.
1965 ....................
This is easy, common denominators. Well you know denominators are at the bottom of a fraction, and you know common means the same, so it would be something like
a d
b = b
