In the 1950s, the United States became especially concerned about Latin American countries because

One reason could be because of communism. as countries becoming more and more poor because of WW2 they turned to communism, or dictators (people who promised better life). Cuba, Korea, and many others have fallen to this state. the US was very concerned about themselves and other's because the spread of Communism.

latin america is a region of racial and cultural diversity.  it is a group of countries and dependencies in the americas where romance languages are predominant. the term originated in 19th century france as amérique latine to consider french-speaking territories in the americas along with the larger group of countries where spanish and portuguese languages prevailed.

explanation:

answer: the correct answer is d. a christian revivalist movement in the u.s. during the early 19th century

explanation: the second great awakening was lead by the preachers of baptist and methodist congregations in order to gain support for the protestant religion from the 1790's to 1840's