Final answer:
The attitudes of Mahan, Roosevelt, Dole, and other missionaries had a significant impact on American expansionism, with Mahan and Roosevelt advocating for a strong navy and missionaries promoting the spread of Christianity and American values.
Step-by-step explanation:
The attitudes of Mahan, Roosevelt, Dole, and other missionaries played a significant role in American expansionism in the late 19th and early 20th centuries.
Alfred Thayer Mahan, a naval strategist, advocated for a strong navy and emphasized the importance of naval power in securing overseas expansion.
His ideas influenced Theodore Roosevelt, who as the Assistant Secretary of the Navy, supported the expansion of the U.S. Navy as a means to secure American influence globally.
Missionaries, such as those affiliated with the American Board of Commissioners for Foreign Missions, saw expansionism as an opportunity to spread Christianity and American values abroad.
They believed in the conflation of Christian ethics with American virtues and actively sought to spread both the gospel and American ideals throughout the world.