Because of that, women should not marry in their teen years.
State it in a way so that you stamp your idea.
Because of the changes in the woman's world, I believe they should not marry in their teen years.This allows them to have their own job and to progress in life.
I don't think progress in life is a good phrase.
This allows them to have their own job and helps them climb up the co-operate ladder.But waiting to get married allows them to grow up professionally and personally and to be ready to face marriage life in a mature and responsible way.
I think you have a very good ending. :) nicely balanced.
It might be an idea to use a few examples. Such as the medical field. In the past women were not allowed to become doctors. And there are plenty of other examples still today.