Which is a formal region?
(points : 1)
the state of illinois
the chicago metropolitan area
the historic neighborhoods in boston
the trade route along the mississippi river

The large connected urbane area from boston to washington, d.c. is often referred to as

Over half of the african-american population in the united states live in

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust