•what is the name of the region labeled "a" on the map ? name one major civilization that arose from this river valley region • what is the name of the region labeled "b" on the map ? name one major civilization that arose from this river valley region

The region labeled A is Egypt.

The civilization that arose in this region was the Egyptian civilization. It was a strong long lasting civilization that left behind lots of evidence of their glorious prosper and life, most notable the pyramids.

The region labeled B is Mesopotamia.

The civilization that arose in this region were the Sumerians. The Sumerians are often seen as the civilization that set the basis of science in the ancient world, they are well known for their knowledge and inventions, most notable the development of math.

what the first or next guy says

china has confucianism thats everywhere in asia but it isn't really a religion.