How many river valleys stemmed from the nile river ?

Look at the graph. where p is price and q is quantity, what might cause a move from b to a?

The answer because i don’t know it someone

In the 1950s, the u.s. government encouraged american jazz musicians to perform in the soviet union, which was an enemy of the u.s. at the time. of what foreign policy goal is this a good example? strengthening world economic growth improving education for the global population advancing the growth of democracy and good government increasing understanding of american values and creating a receptive international environment