In 1827 the United States agreed to occupy the Pacific Northwest with The first settlements in this region were located

By the 1850s, settlers had finally begun to arrive in

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Explanation:

Question: In 1827 the United States agreed to occupy the Pacific Northwest

Answer: Spain, Russia, Britain, and the United States all claimed rights to the Pacific Northwest. In 1818 British and American negotiators agreed that nationals of both countries could trade in the region; this agreement was renewed in 1827

Question :The first settlements in this region were located

Answer: Jamestown, Virginia

Question:By the 1850s, settlers had finally begun to arrive in

the right answer is the constitution

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