Is mesopotamia the largest river valley

Which is not an abundant natural resource found in africa?

Germany italy and japan formed the tripartite pact in part because they: a. hoped to convince the united states to stay out of world war ii b. share the ruling philosophies based on communist economics c. resented the agreements they were forced to sign at the munich conference d. believed their territories were threatened by aggressive foreign states

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