Answer:
The European nation that supported the Monroe Doctrine was Great Britain.
Explanation:
The formulation of the Monroe Doctrine helped Great Britain to thwart the European plans of recolonization of the Americas, therefore, although in principle the prohibition made by the United States also affected the British, they used it as a way to limit the power of its European rivals, collaborating with the United States in the supervision of the Doctrine and its enforcement. Great Britain never saw with good eyes to promote that other states like France were established in the Americas. Much less it liked the fact that after the Congress of Vienna, the European countries wanted to recover their former colonies, which would give them an important advantage over Britain itself, which was unable to recover their colonies in North America.
