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.
Religion differs from one another in terms of their belief of their deity, the belief of living and non-living things, the belief of spirits, and many more aspects. The correct match among the choices given is Buddhism; follow the middle path to achieve Nirvana.
The racial composition of a district could not be the predominant factor when redistricting.
It was the idea of "Manifest Destiny" that was the belief that it was God’s plan for the United States to own most or all of North America, since people thought the US was "destined" to occupy all the territory from the Atlantic to the Pacific.