how many amendments does the constitution have?
Thirty-three amendments to the United States Constitution have been proposed by the United States Congress and sent to the states for ratification since the Constitution was put into operation on March 4 1789. Twenty-seven of these having been ratified by the requisite number of states are part of the Constitution. The first ten amendments were adopted and ratified simultaneously and are known collectively as the Bill of Rights. The 13th 14th and 15th amendments are collectively known as th