There was tension in the politics of the nation which were largely due to differences in the economies of the North and the South. For the South, slavery was used as a labor source hence they supported slavery. The North on the other hand was opposed to slavery as it was largely urbanized. Different regions led to the creations of different economies.
The last country in the world to challenge the United States control of Oregon was Great Britain. Oregon was won in the War of 1812.
Answer:
The answer would be C, or the 3rd one. :)
Explanation:
