No Christian or Conservative should support such a thing. What they need are real property rights. The education of women also has a direct effect on birth rates. Unfortunately, both come from deeply-held cultural attributes about how a society views wealth, individual rights, and the role of women. I doubt Africa will achieve it.
I’m not saying forced sterilizations. Simply offer to pay $1,000 to every recipient, and provide free operations.
There’s nothing unchristian or un-conservative about that.