Summer says "D'après my research, des archéologues have found many artifacts here in l'énorme pyramide El Castillo."What does D'après mean?

“D’après” means “according to” when introducing information from a source. Here, Summer is referring to her research, so the sentence means “According to my research, archaeologists have found many artifacts here.” “After” is a possible meaning of “après” on its own, but not of “d’après” in this context.

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