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All Constitutional amendments to date have been ratified after approval by two-thirds of the House and Senate, as well as affirmation by three-fourths of the states. Another, unused, method involves two-thirds of state legislatures calling a Constitutional Convention, with three-fourths of the states approving the amendment.
Only the 21st Amendment (repealing the 18th) was ratified by conventions in the states.
The twentieth amendment was ratified in 1933.
The Twenty-first Amendment, repealing the Eighteenth Amendment, is the only constitutional amendment to be ratified by state conventions (Vile, 1996, p. 318).References:Vile, John R. (1996). Encyclopedia of Constitutional Amendments, Proposed Amendments, and Amending Issues, 1789-1995. Santa Barbara, CA: ABC-CLIO, Inc.
Only the 21st Amendment (repealing the 18th) was ratified by conventions in the states.
It was ratified by state conventions rather than by state legislatures.A+:)
A proposed amendment must be ratified by 3/4 of the individual states.Only the 21st Amendment was ratified by special state conventions called for the purpose, the second method allowed by Article V of the US Constitution.
2/3 vote
The Sixteenth Amendment, ratified in 1913.
ratified by state legislatures or state conventions.
amendment 21
A constitutional amendment is any change in the US Constitution. Like the constitution, an amendment must be proposed and then adopted by Congress or by state conventions. It must then be ratified by 2/3 of the current states before it becomes part of the Constitution. Amendments can only be superceded by another later amendment, or repealed by one.