Question

american exceptionalism can best be defined as the belief that
o the united states could acquire territory by force because us troops were exceptional.
o the united states had a duty to spread its ideals around the world.
o oregon country should be different from other northwestern territories.
o oregon country was an exception to british possessions in the west.

Explanation:

American exceptionalism is the idea that the U.S. has a unique role or mission. Spreading its ideals globally aligns with this concept. The first option focuses on force (not the core of the ideology). The last two options are about specific regions (Oregon Country) which is too narrow.

Answer:

the United States had a duty to spread its ideals around the world.