Answer:
1. United States ships were getting sunk by German U-Boat warfare
2. Inability to remain neutral
3. Zimmerman Telegram of 1917
4. U.S. economic and political ties to Great Britain
Franklin D. Roosevelt
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The major similarity between these two documents is that both reflect the idea that there should be limitations on the power of the government. This is an important idea that is one of the major bases of our entire system of government today. The major difference between the two is the degree of democracy that they contemplate. The Magna Carta is really meant as a contract between the king and his nobles, giving the nobles guarantees against the king. By contrast, the Declaration of Independence is a call for equality and rights for all people (or at least all white men). This means the Declaration is far more democratic than the Magna Carta.
This might help. I think The Boston Massacre occurred on March 5, 1770 when British soldiers in Boston opened fire on a group of American colonists killing five men.
Labor. People have always been an important resource in producing goods and services, but many people are now being replaced by technology.