Question

Whose efforts gave the British claims in Oregon?

James Polk
Andrew Jackson
Martin Van Buren
John Jacob Astor
George Vancouver

Answer 1

The British claims in Oregon were significantly influenced by the exploration and mapping efforts of **George Vancouver**. Vancouver conducted extensive surveys of the coast in the late 18th century, which contributed to Britain's claims in the Oregon Territory. Although James Polk also played a role in the political aspect of claiming Oregon as president in the mid-19th century, it was Vancouver's exploration that laid the groundwork for British interests in the region.