The Monroe Doctrine was drafted and planned because the U.S. government was concerned about the European powers and their desire to encroach on the U.S. sphere of influence by mapping out some colonial territories in the Americas.
The doctrine was post reaction to concerns in both the United States and in Britain that the continental super powers would try to restore Spain’s former colonies, in Latin America, many of which had turn into newly independent countries. The United States was also worried about Russia’s territorial aspirations in the northwest region of North America. As a result of all these, George Canning, the then British foreign minister, recommended a joint U.S.-British declaration forbidding future colonization in Latin America.
The major political issues of the Gilded Age were thetariff<span>, </span>currency reform<span> and </span>civil service reform<span>. Hope this answers your question. : )</span>