in the early 1800s what four countries claimed land in oregon
Great Britain
-1
Section::::Early exploration.

Oregon Country
327342
France
-1
Section::::Territorial evolution.

Oregon Country
327342
Russia
-1
Section::::Territorial evolution.

Oregon Country
327342
Spain
-1
Section::::Early exploration.

Oregon Country
327342
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NONE
Section::::Territorial evolution.

Oregon Country
327342