*****!!!!!SPOILERS FOR AVENGERS: ENDGAME!!!!!****

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So, after I saw Endgame, I began to ponder about the soul stone. We know that Natasha sacrificed herself to get it, but then at the end, Cap returns it. Now, I don’t know how that whole sacrifice thing works, and there may already be an answer out there that I just don’t know about, but if the stone is returned, would the sacrifice be reversed? If so, is Natasha stuck in an alternate timeline?