Where is the area around 54°40? OA.
Astoria, Oregon
OB.
Beginning of the Overland Trail
O C.
Mountains in what is now British Colombia
OD.
Santa Fe Region
O E. Valleys of California

OA

Explanation:

Oregon Territory

The are around 54 degrees 40' or Fight is the southern boundary of the United States with Mexico which is a western territory that is under dispute. The Oregon Territory covered modern states of Oregon, Idaho, and Washington. Also, it includes the western coast of Canada up to the border of Russian Alaska.

the correct answer is:

b) a rich merchant.

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth