U.S. participation in NATO was a break with tradition, since the United States for the first time set itself up to automatically get involved in foreign conflicts--something that was very unnerving for a country of people who for most of American's history had been very isolationist.
If you're asking if it's true than Yes
The correct answer is C. Caravel
They were fast and maneuverable and could go through tough water easier than big sturdy ships and were great for explorers who even wnated to go up and down big rivers into continents when exploring, or pass easily between islands or similar things.
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It is noted that now 27 countries of the world peg their currencies to EURO. So the answer is EURO.