which early river valley civilization is marked by the letter a
Indus Valley 
China 
Mesopotamia
Egypt
                                             
                                          
                                          
                                        
											 
											ANSWER: Egypt which is known as the Egyptian Civilization.
EXPLANATION: The point A on the world map shows the African continent and the area where the modern day Egypt is situated. Egyptian Civilization dates from 4th Millennium BCE and was situated beside the Nile river. The region is a part of North Africa and is adjacent to the Sahara Desert also.