Final answer:
The Monroe Doctrine barred European colonization in the Americas, aiding Latin American nations' sovereignty and self-governance.
Explanation:
The Monroe Doctrine was a proclamation by President James Monroe in 1823 that barred European powers from colonizing the newly independent nations in the Americas.
It helped Latin America by preventing European re-colonization and external interference, allowing these nations to establish their sovereignty and self-governance without facing foreign occupation.
The doctrine also served as a foundation for U.S. intervention in the Western Hemisphere, as exemplified by the Roosevelt Corollary which expanded American influence and control in Latin America.
Learn more about Monroe Doctrine and its impact on Latin America here:
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