Answer:
Life, Liberty and the pursuit of Happiness" is a well-known phrase in the United States Declaration of Independence. The phrase gives three examples of the "unalienable rights" which the Declaration says have been given to all human beings by their Creator, and which governments are created to protect. These rights apply to ideals or issues that are important in today’s world because they talk about life and happiness which every person in this world has.
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To keep either house of Congress from becoming too powerful. (Gradpoint)
The reasons for war were many, but there were two immediate ones: America's support the ongoing struggle by Cubans and Filipinos against Spanish rule, and the mysterious explosion of the battleship U.S.S. Maine in Havana Harbor.
I think it is D: Excise taxes