Answer:
The United States controlled the Oregon Country.
Step-by-step explanation:
The United States controlled the Oregon Country from the year 1859 when the it was officially admitted as a state of the union on February 14th, 1859. Before 1859, it was controlled by the British empire. The United States wanted the Oregon Country in order to get access to the pacific ocean so when the United States get stronger they claim the Oregon Country and included in it as a state.