Manifest Destiny was the 19th-century belief that it was the divine right and duty of the United States to expand its territory across the North American continent. This idea was rooted in the belief that Americans had a mission to spread democracy and civilization, often at the expense of Native American territories and other nations.
So, the most accurate statement concerning Manifest Destiny from your options would be: "It was our duty to bring civilization to Native American territories." Manifest Destiny justifies expansionist policies, leading to the displacement of Native Americans and conflicts with other nations.