question: What cause different paleogeographic regions in the Triassic , Jurassic and Cretaceous periods ?
answer: A series of tectonic events
turker_answer: A series of tectonic events caused different paleogeographic regions in the Triassic , Jurassic and Cretaceous periods .
rule-based: A series of tectonic events cause different paleogeographic regions in the Triassic , Jurassic and Cretaceous periods .