I think you are mistaken. In fact if you look how Einstein derived GR you will see he simply included the Newtonian limit as a given. Technically GR is simply Newtonian gravity plus relativistic effects. GR does not explain
anything, it is simply a more accurate theory.
If you think I am mistaken, please demonstrate how it explains
the inverse square law. Or an even simpler question: How does GR get to the Newtonian limit.