Can you please correct these few sentences?

I want to post this question in a website. So I want to know if it contains grammatical errors. Can you please correct, if it has?

"Did most of the women in prophet Mohammad's (sw) time use to write in their nikhanama (marriage paper) that my husband has to take permission of me if he wants to marry another woman? or most women didn't think of doing it? I think it should be Allah who should have commanded men not to marry more than one woman unless the wife gives permission. Because if a woman writes in the nikhanama (marriage paper) that you (husband) can't marry another woman, her marriage might not have taken place.(I mean the marriage might not be committed/her marriage might not be full filled, or might have broken up). In this era not in all countries women are more than men. Men in these days don't go to war so much and get killed. Thus in most of the countries have quite equal men and women. And the countries that has two or three percent more women, the men can search for another woman to marry, and when he finds a woman, that woman should be the one who was not able to get married after waiting for at least four years in order to marry her. If this is not the case, the man shouldn't marry her since he has already a wife. But if he wants to marry her despite that is not the case, he should take his wife's permission."

Please correct my grammatical errors, if it has.