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Explanation:

The 9/11 Memorial in New York City is a national tribute of remembrance to the 3,000 culturally diverse victims of the terror attacks of September 11, 2001 and February 26, 1993. The 8-acre Memorial Plaza contains two massive granite reflection pools, North and South; 400 swamp white oak trees; and a museum of 120,000 sq ft. scheduled to open in September 2012. Each pool contains an infinity waterfall surrounded by bronze parapets stencil cut with victims' names, including the unborn. The ambiance of the plaza is tempered by the ongoing reconstruction of buildings destroyed and damaged during the September 11 attacks.

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congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress