The Monroe Doctrine was proclaimed by President James Monroe in his annual message to Congress on December 2, 1823.

President James Monroe issued the Monroe Doctrine in 1823, during his second term in office.

The Monroe Doctrine aimed to prevent further European colonization and interference in the newly independent nations of the Americas.

The Monroe Doctrine was primarily directed at European powers, particularly Great Britain, France, and Spain, who had colonial ambitions in the Americas.

The Monroe Doctrine was based on the principle of non-intervention, asserting that European powers should not interfere in the affairs of the Americas.

The Monroe Doctrine led to increased American involvement in Latin American affairs, as the US sought to protect its interests and prevent European intervention.

The Monroe Doctrine specifically mentioned Mexico and Colombia as examples of newly independent nations whose sovereignty the US would defend.

European powers generally protested the Monroe Doctrine, viewing it as an attempt by the US to assert dominance in the Western Hemisphere.

The Monroe Doctrine helped establish American hegemony in the Americas, solidifying its position as the dominant power in the Western Hemisphere.

The Roosevelt Corollary, proclaimed by President Theodore Roosevelt in 1904, extended the Monroe Doctrine by asserting the right of the US to intervene in Latin American affairs to maintain order and stability.

The Monroe Doctrine has never been officially repealed, although its interpretation and application have evolved over time.

The Monroe Doctrine played a significant role in preventing further European colonization in the Americas and establishing American influence and control over the region.

President Theodore Roosevelt expanded the scope of the Monroe Doctrine with the Roosevelt Corollary, asserting the right of the US to intervene in Latin American affairs.

The Monroe Doctrine often created tensions and resentment among Latin American countries, who viewed it as an assertion of American dominance and interference in their sovereignty.

The Monroe Doctrine played a crucial role in establishing the United States as the dominant power in the Western Hemisphere, contributing to the development of the concept of the 'American sphere of influence'.