Find the best answers to your questions with the help of IDNLearn.com's expert contributors. Join our knowledgeable community and access a wealth of reliable answers to your most pressing questions.
Answer:
From the late eighth through the end of the ninth century, something unknown happened to shake the Maya civilization to its foundations. One by one, the Classic cities in the southern lowlands were abandoned, and by A.D. 900, Maya civilization in that region had collapsed.