The principal goal of the supporter of Manifest Destiny in the 1840s was to?

The principal goal of supporters of Manifest Destiny in the 1840s was to expand the United States' territory across the North American continent, from the Atlantic to the Pacific Ocean. They believed that this expansion was not only a right but also a divine destiny, promoting the idea of American exceptionalism. This movement was driven by a mix of nationalism, economic interests, and a belief in the superiority of American democracy and culture. Ultimately, Manifest Destiny fueled territorial acquisitions, including Oregon and California, and intensified debates over slavery's expansion.