In Zack Snyder's Justice League (ZSJL),
younger Darkseid had come to conquer Earth 1000's of years ago, and had lost. He was rescued by his parademons, but the three Mother Boxes were left behind. Now, he has forgotten which world it was that robbed him of his glory.
But in the the present, when Steppenwolf is called by the three Mother Boxes, (or was it just one Mother Box that called him? And if so, then how did he come to know that there were two other boxes on Earth?), how did the New Gods not realise that this was the world that robbed him of his glory? How else would three Mother Boxes be left behind if not for Darkseid having been defeated in the past?