The answer would have to be the third option
Answer:
The U.S. entered World War I because Germany embarked on a deadly gamble. Germany sank many American merchant ships around the British Isles which prompted the American entry into the war.
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The methods that have resulted in the greatest contribution to global security were: <span>military they pledged for the common defense and the stronger and bigger the were the better protection.
Unlike in the past, the greatest military in Modern Era is not possessed by the countries that have the most soldiers, but by those who possessed the most advanced mass destroying weapons.</span>
Answer:
Europeans traded in slaves because this was a free source of labor. They did not need to do the strenuous work by making their slaves do it for them, so it was on a high demand
Answer:
research design
Explanation: Hope this Helps!