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Robert Gray.
"In the 1830's and 1840's most Americans were convinced that their nation was destined to occupy all the land from the Mississippi River to the Pacific Ocean. This conviction came to be known as "Manifest Destiny." Some Americans even thought that they would take over Canada and Mexico as well. Robert Gray established the first U.S. claim in Oregon. Through diplomatic negotiation with Great Britain in 1846, the United States acquired the Oregon territory, a vast area of 285,000 square miles."
What else can I help you with?
Gave the US its first claim to the Oregon country?
Robert Gray
What gave the US its first claim to Oregon Country?
Great Britain
What was the treaty that ended the war of 1812 and gave the US claim to Oregon?
Robert Gray established the first U.S. claim in Oregon.
Did Francis Drake James Cook and George Vancouver give France a claim to Oregon?
No they gave England a claim to Oregon
What gave up its claim to the Oregon Territory in the same treaty in which it gave Florida to the US?
spain
Who was a fur trader that gave Americans a claim to Oregon by sending a shipload of men to the region?
my grama
What gave up its claim to the Oregon Territory in the 1820s when the Monroe Doctrine closed the American continents to further colonization?
Russia
What claim in the Adam-onis treaty did Spain give up?
Spain gave up her claims to Oregon, ceding them to the US. She also gave up Florida to the US.
Who Gave France its first claim to South Carolina?
Francisco Gordillo
What was the treaty that gave the us complete control of the Oregon country?
Webster-Ashburton Treaty
The explorer who gave England its first claim to land in North America?
John Cabot
The explorer who gave England its first claim to land in North America was .?
John Cabot
