Ancient egypt was concentrated along the
a. caspian sea
b. tigris river
c. nile river
d. euphrates river

Ancient Egypt was concentrated along the Nile River. The correct option among all the options given in the question is option "c". Ancient Egypt was actually a civilization of Northeastern Africa that started in the lower reaches of the river Nile. The fertile river banks of the river Nile helped in the flourishing of the civilization. Once the food supply became sure the civilization grew with time to become one of the greatest civilizations of ancient world. So the Nile River has a great significance to the people of Egypt.