The correct answer is C) accustomed to military involvement overseas.
The other options of the question were A) less interested in Latin American affairs. B) unwilling to resolve issues through diplomacy. D) politically unstable.
The statement that best describes the United States at the beginning of the twentieth century is "accustomed to military involvement overseas."
We are talking about two major wars and some local wars in specific territories to maintain its political and economic interests.
The first case is World War 1 and World War II. Although President Woodrow Wilson wanted to maintain a foreign policy of neutrality, the Sinking of the Lusitania ship and the interception of the Zimerman telegraph made Wilson enter the war. Something similar happened in WWII. President Franklin D. Roosevelt maintained a policy of neutrality but the attack of the Japanese army over the Island of Pearl Harbor, Hawaii, in December 1941, forced Roosevelt to enter WWII.
During the Cold War years, the US was involved in international conflicts with Russia such as the case of the Korea War or the Vietnam War.