What do you believe Monroe meant when he told European
nations to keep their hands off land in Central and South
America?

By saying that Europeans should keep their hands off land in central and South America was no Europeans should ever establish a colony in America.

Explanation:

The Monroe Doctrine is the most popular U.S. approach toward the Western Hemisphere. Covered in a standard yearly message conveyed to Congress by President James Monroe in December 1823, the convention cautions European countries that the United States would not endure further colonization or manikin rulers.

Great Britain at the time communicated that they felt the Monroe Doctrine was, "straightforward and bearable, as Monroe considered it" and that the American dread of European rulers encompassing the Western Hemisphere by settlements "intended to act forcefully against republican establishments" was sensible.

The Monroe Doctrine was initiated in the year 1865 when the U.S. government decided to lend a hand to the Mexicans.

Explanation:

In 1833, James Monroe brings out a strong policy statement asking the British colonizers to keep their hands off land in Central and South America and challenging their security in the Western Hemisphere.

The Monroe Doctrine was initiated in the year 1865 when the U.S. government decided to lend a hand to the Mexicans. December 1823, U.S. President, James Monroe states that the colonization of the British will no more be tolerated and should leave away with their puppet monarchs.

It soon turned into a doctrine as a warning to the British to not involve itself with the Central and South American places.