We see its influence over the Mayan cities, especially over Tikal, as we get into the end of the fourth century. We also see this incredible confluence of people and culture and trade at Teotihuacan, which once again hints that it probably wasn't a standalone city, but it was probably the center of some type of regional influence, or maybe an empire. We don't traditionally see cities of that size form unless they're the center of a larger empire, and they're able to get tribute or taxation from other states. Now, Teotihuacan ends up declining or falling before the Mayan civilization. You see Teotihuacan in this blue-green line. You see the Mayan civilization in this light blue, and then in the classical period, this slightly darker light blue. And Teotihuacan collapses around 550 in the Common Era.