2/3 of each chamber of Congress must approve it, and then it must be ratified by the favorable votes of 3/4 of the state legislatures.
Europe has man countries and they have constitutions. In many of those countries there have been amendments to their constitutions.
only 27 of the 31 amendments proposed have been ratified
Amendments.
27 have been ratified
Amendments change a constitution.
Amendments can be ratified by Legislatures of 2/3 of the states. Amendments can be proposed by 2/3 vote of each house of Congres.
Changes or additions to the Constitution are called Amendments.
During the course of our history, in addition to the 27 amendments which have been ratified by the required three-fourths of the States, six other amendments have been submitted to the States but have not been ratified by them.
Your question is very confused. Amendments are ratified, they do not ratify.
Twelve Constitutional amendments were proposed in September 1789. The third through twelfth became the first ten Amendments when they were ratified in December 1791, and the second proposal became the 27th Amendment when it was ratified in May 1992.
Delaware
Only the 21st Amendment (repealing the 18th) was ratified by conventions in the states.