The international declaration that follows Washington's advice is the Monroe Doctrine. This doctrine was established by President James Monroe in 1823. It aimed to prevent European powers from interfering in the affairs of the Western Hemisphere, including the Americas. The doctrine essentially warned European nations against colonizing or meddling in the newly independent countries in the Americas.
The Monroe Doctrine is significant in American history as it set the stage for the United States to assert its influence in the Western Hemisphere and establish itself as a dominant power in the region. It also helped shape American foreign policy for years to come, influencing various diplomatic decisions and interactions with other nations.
In summary, the correct answer to the question is:
c. Monroe Doctrine
