A portion of land can best be described as a __________.

A.

state

B.

territory

C.

boundary

D.

physical feature





2)After the United States purchased the Louisiana Territory, America’s western boundary shifted to the __________, which is a(n) __________ boundary.

A.

Mississippi River . . . visible

B.

Mississippi River . . . political

C.

Rocky Mountains . . . physical

D.

Rocky Mountains . . . imaginary




3)Political issues that may lead to the creation of political boundaries include __________.

A.

shifts of riverbeds

B.

extreme climate changes

C.

conflicts between two neighboring groups

D.

trade agreements between existing countries