Serfs are the members of the feudal system was MOST tied to the land. Also, called peasants.
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"Supporters of terrorism" is the one among the following choices given in the question that is the "ruthless enemy" in the quote. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your desired help.
This is based on President John F. Kennedy's speech which focuses on a new beginning towards peace. What he wants his listeners to ponder is to struggle against tyranny, disease, war, and poverty. He summons everybody to participate and join in this goal. The answer is the third option.
Egyptians because they were royalty and super super smart