Question

After Congress has approved a proposed amendment to the Constitution, what then must take place before that amendment becomes law?

Answer 1

Your answer is Three-quarters of the states must approve it

Hope i helped :)

Answer 2

Answer:

  The proposal made by Congress in the form of a joint resolution is forwarded to the National Archives and Record Administration (NARA). Which submit to its Office of the Federal Register for processing and publication. The OFR ads legislative history notes and they send it to the states for their consideration.

  The governor of each state must submit the amendment to their State legislature for its ratification. If three-fourths of the states ratified the amendment it becomes part of the Constitution.

  I hope this answer helps you.