How would people get rid of unwanted children if abortion or any method of killing unborns was not a possibility?

I am not talking about abusive people. I'm talking about empathetic people who didn't want to become parents.
So women who don't want their unborns but are good people. They are not abusive women. Not all women who want to end the lives of their unborns are abusive, right? Or am I wrong?
How would people get rid of unwanted children if abortion or any method of killing unborns was not a possibility?
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