Select the locations of the world’s earliest river valley civilization? which one would it be? 15 points to anyone who answers correctly

How did people in the 14th century understand black death

Which were lenin’s actions before and during the russian revolution

The picture below shows president richard nixon and the first lady standing before the great wall of china in 1972. they are smiling - as are the chinese with them. when this picture was shown on american television, americans were aware that it was a historic moment. what are two reasons why this moment was important for both china and the united states?