The Mayans met their demise when the Spanish conquered the Mayan with the combination of superior technology and the introduction of foreign diseases. Foreign diseases such as smallpox weakened populations and were thus easier to subdue.
The best and most correct answer among the choices provided by your question is the fourth choice or letter D which the statement "The U.S. military had intervened in Haiti to help remove a brutal regime and help the small nation start to implement democracy." is significant <span>to the American public at the time.</span>
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I think it’s the letter D) history