Well the Preamble of the Declaration was mainly to show that the United States (colonies at the time) no longer wanted to be under British rule. knowing this i believe the answer is C.
Causes of the War. Demands by Cuban patriots for independence from Spanish rule made U.S. intervention in Cuba a paramount issue in the relations between the United States and Spain from the 1870s to 1898.
The correct answer to this open question is the following.
One of the actions that President Kennedy took in addressing the humanitarian concerns of the cold war was the creation of the Peace Corps, which was a volunteer program to assist other countries during the Cold War years, financially and socially. It was created on March 1, 1961. Young Americans were trained for three months to prepare them before traveling to other countries to assist people in need.
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C. Allowing newly added territories to the United States decide for themselves the slavery issue.</span>
Popular sovereignty was proposed as a way to decide the issue of slavery in the new territories. Under such a system, the local population would decide the slavery issue rather than Congress.