The correct answer to this open question is the following.
Although there are no options for this question we can say the following.
According to the 19th-century concept of manifest destiny, who should possess the North American continent?
Answer: the United States.
United States President James F. Polk took Manifested Destiny as a flag for his administration and follow through with this idea that was God's will to expand and control the North American territory in order to instill democracy and Capitalism in the territory.
This belief system was the cause of international conflict as was the case of the Mexican-American War in which the United States received the territories of California, Arizona, and New Mexico, after its victory over the Mexican Army.