In the late nineteenth century, the US Army clashed with Native Americans, and ... they increasingly came into violent conflict with Native American Indians over ... especially after the discovery of gold in western territories sparked the Gold Rush. ... series of conflicts known as the Sioux Wars, which lasted from 1854 to 1890
That would be A, and abundance of Natural resources. The United States was still pretty new when the industrial revolution started, so they had a huge amount of natural resources at their disposal, unlike Britain that had been there for way way longer. Hope this helps! I’m new on here.
The satamaria and the fair and the cival war
The US adopted containment to prevent the spread of communism/ Soviet influence
The answer should be Indian Ocean