Answer: pangaea

AnswerCrossword Clue
PANGAEAAncient supercontinent
PANGAEAGondwanaland and Laurasia, before breaking apart
PANGAEAHypothetical supercontinent
PANGAEASupercontinent of 200+ million years ago
PANGAEAIt underwent a long, massive breakup
PANGAEASupercontinent of 200 million years ago