When Theodore Roosevelt succeeded William McKinley as president in 1901, he realized the US was no longer just a continental republic; with the Spanish-American War of 1898, America now claimed Guam, Puerto Rico and the Philippines as territories, Cuba a protectorate and annexed Hawaii.
Roosevelt “believed it was the burden of ‘civilized’ nations to uplift ‘uncivilized’ nations,” says Michael Patrick Cullinane. He believed U.S. interests were global interests, and that it was actually good for “civilized” nations to intervene in other countries’ affairs.
Moreover, the 26th president made sure the U.S. played a larger role in international affairs by extending the Monroe doctrine through the Roosevelt Corollary – the United States, henceforth, would protect countries in the Americas from recolonization by European powers, and would intervene militarily if necessary to do so. It was a foreign policy he described as “speak softly and carry a big stick.” US presidents since Roosevelt have pursued his “big stick” foreign policy agenda.
In the slightly less than a hundred years from 1898 to 1994, the U.S. government (directly or indirectly) has intervened successfully to change governments in Latin America, alone, at least 41 times. That amounts to once every 28 months for an entire century. Overall, while the United States engaged in 46 military interventions from 1948–1991, from 1992–2017 that number increased fourfold to 188.