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Adam- Onis Treaty was signed wtih Spain
Adam- Onis Treaty was signed wtih Spain -
Russia gives up its claim to Oregon
Russia gives up its claim to Oregon -
Whitmans arrive in Oregon
Whitmans arrive in Oregon -
Americans begin the "great migration"
Americans begin the "great migration" -
United States and Britain agree to 49 degrees North as border of Oregon
United States and Britain agree to 49 degrees North as border of Oregon