Besides the United States, who else claimed Oregon Country in the early to middle 19th century? (early to mid 1800s)

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Explanation:

Great Britain, Russia, France, and Spain

Explanation:

But the US claimed it

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes