The US Constitution was ratified by the required 9 states of June 1788
Rhode Island finally accepted The Constitution on May 29, 1790. (:
The Supreme Court
The Supreme Court settles questions about interpretation of the US Constitution.
it is 1890 that's when it was found Elliott
Thirteenth Amendment to the Constitution, December 1865.
It took four years of war and the 13th amendment to the Constitution of the United States to finally end slavery in America.
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The Bill of Rights (ie the first ten ammendments to The Constitution)
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When the Bill of Rights were amended into the constitution
Kentucky & Delaware