maybe they should use birth control if they are too poor to feed their kids.
Or eat all the cows hanging around.
In poor countries there is no Social Security or pension plans. You starve when you get too old to work, unless you have grown kids to take care of you.
Perhaps the US could abolish welfare, so as to encourage poor girls to get married instead of depending on a government check? And reform the family court system so as to make marriage more attractive to men?