What was a key phrase associated with the ideology driving U.S. expansionism?

The phrase "Manifest destiny" is key to understanding the ideology that underpinned U.S. expansionism in the 19th century. This belief held that the United States was destined to expand across the North American continent, from the Atlantic to the Pacific Ocean. Proponents of manifest destiny argued that this expansion was not only justified but also divinely ordained, reflecting a sense of American exceptionalism and a mission to spread democracy and civilization.

Manifest destiny served as a rallying cry for various expansions, including the annexation of Texas, the Oregon Trail migration, and the acquisition of territory following the Mexican-American War. As a result, this ideology was deeply intertwined with the broader themes of American nationalism and imperialism, fostering a belief that the U.S. had a unique role to play in shaping the world.

The other phrases listed, such as "Workers of the world unite," are associated with different ideological movements, particularly in the context of labor and socialism, while "New Deal" refers to Franklin D. Roosevelt's programs in the 1930s aimed at addressing the Great Depression. "Fourteen points" pertains to President Woodrow Wilson's post-World War I framework for peace, which sought to address the causes of the war and prevent