Answer :
There is actually amendments proposed all the time but most don't even make it to congress! So yes there have been ideas that haven't become part of the constitution. Amendments have extended the right to vote because they have given the rights of women and 18 year olds to vote.
Answer:
Why did the Founding Fathers create a process for amending the Constitution?
So that not every president would change the constitution and to protect presidents from changing the constitution to help themselves.
Why did they make it a long and difficult process?
So that not every president would change the constitution for an unnecessary reason.
Have any proposed amendments not become part of the Constitution? Explain.
There are actually amendments proposed all the time but most don't even make it to congress! So yes there have been ideas that haven't become part of the constitution. Amendments have extended the right to vote because they have given the rights of women and 18 year olds to vote.
How have amendments extended the right to vote over time?
Originally only old white us men citizens can vote. Slowly the US changed to all us citizens can vote.