Who supported the formation of Washington Territory out of a belief that it was destiny for the US to settle the Pacific Northwest?

Question

President Millard Fillmore
Governor Isaac Stevens
Oregon Territory’s northern settlers
Oregon Territory’s southern settlers

Answer 1

The formation of Washington Territory was supported by Governor Isaac Stevens, who believed in the destiny of the United States to expand and settle in the Pacific Northwest. Stevens played a key role in advocating for the establishment of Washington Territory and was a significant proponent of Manifest Destiny during that period.