It was the election of Abraham Lincoln as US president that caused southern states to secede from the union just weeks after it happens, since he was an outspoken opponent of slavery.
Hello friend!
Your answer to this questions is <u>Veto</u>.
When the President refuses to sign a bill, there official name for this is Veto. Veto means "a constitutional right to reject a decision or proposal made by a law-making body."
<em>source Oxford Dictionaries.</em>
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Have a splendid day!
<em>-Edge</em>
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<span>a pattern of colonial commerce in which slaves were brought on the African Gold Coast with New England rum and then traded in the West Indies for sugar or molasses, which was carried back to New England to be manufactured into rum.</span>
Vietnam put America in a war that was never officially declared