The "melting pot" theory of American society assumes that immigrants D. assimilate into a single American culture. In a melting pot, the idea is that all sorts of immigrants will come to America and melt together, abandoning a strong tie to their original culture and instead forming a new culture.
The meaning of MacArthur’s statement can be described as "The US has been forced to retreat from the Philippines but will take it back from Japan."
<h3>Who was MacArthur?</h3>
Douglas MacArthur was an American military leader, born on January 26, 1880. He was a US general and commanded the Southwest Pacific Theatre in World War II.
In his statement when he left the Philippines "The President of the United States ordered me to break through the Japanese lines... I came through, and I shall return" says that the US was forced to exit from the Philippines but he promised he will come back and take it from Japan.
Therefore the correct option is A.
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B: The Growing use by northern antislavery activists of moral arguments.