30°E
15°E
165°W
0°
15°W
K
150°W
30°W
45°N
135°W
"
)
(
!
60°N
)
"
)
"
)
"
(
!
(
!
!
(
(
!
30°N
)
"
(
!
)
) "
"
(
!
(
!
(
!
45°N
)
"
)
"
(
!
(
!
(
!
(
!
K
(
!
(
!
(
!
20°N
30°N
160°W
155°W
15°N
Major metropolitan areas
! in the USA
(
) in Canada
"
(
!
105°W
90°W
75°W
Generalized physiographic regions of the United States & Canada
Gulf & Atlantic Coastal Plains
Piedmont
Appalachian Highlands
Interior Lowlands
Interior Highlands
Great Plains
Rocky Mountains
Intermountain Basins & Plateaus
60°W
Pacific Mountains & Valleys
Canadian Shield
Arctic Coastal Plains
Hawai'i