Must a member of the House of Representatives be a resident of the district which he represents?

Which two sets of political ideas speed as a result of the worldwide depression of the 1930s

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

In 1870 which path would be the easiest to travel when going from omaha to sacramento a-mormon trail b-transcontinental railroad c-santa fe trail d-california trail