The Mayans were located in what is now North America, between North and South America. They were more advanced then other native groups around that time period.
The Maya were the first ones to use the number zero in mathematics. This is important because this is where we got zero. The Romans didn't even have the number zero.
What Happened to the Mayan Theories
The Mayans were very advanced in astronomy. I think this is important because they could tell when a solar eclipse was going to happen. Or maybe they could tell if an asteroid was coming.
The Most Believable Theory
The Maya had the very first written language in Mesoamerica. This is important because nobody in Mesoamerica had a written language.
One theory of how the Maya collapsed was warfare. Another theory is disease. A third theory is famine. The last theory is disaster and environmental change. I think that the theory that is the least believable is warfare.
Know one knows how the Mayan empire colIapsed think that environmental change is the most probable theory.