OLMECA, the mother of ancient Latin American civilization.

 I think it's a good idea to talk about ancient civilizations before we talk about Mexican history. In Latin America, the leading civilization in ancient times is Olmeca, because many of their customs have had a profound impact on later countries, for example, personal offering or knowledge of astronomy... The culture of worshiping jaguars and social status systems were established for the first time in Latin America. For example, the kings, the priests, the lords, the slaves, these OLMECAs were prosperous from approximately 1800 b.c. to 100 a.d. What is noteworthy about them is that in the city of San Lorenzo, a "ball game" has emerged. This game was to put a heavy, hard ball made of soil into a circle like basketball. This game was played by warriors for physical training, but more importantly, the winner of this game was dedicated to the gods. In the Olmeca civilization, personal service was not a fear, but rather a very honorable thing, so not anyone could be dedicated to it, and it was an honor for the parties that the gods would like. In the city of La Venta, there is a huge stone statue. These are also unique to the Olmeca civilization and are still one of the mysterious remains. They were made by cutting a single stone and drew a human head. Because of the appearance of these statues, the private academia is still discussing whether the Mongolians came to Bering, how black people came to cross, or both. This is because the appearance of these statues is similar to that of black people. The Olmeca priests had great knowledge of mathematics and astronomy. This is because I predicted exactly when to harvest corn and plant it while looking at the stars when the river would overflow. Even this Olmeca is the first civilization to use the number '0'. However, there is still a lack of feed on them, so it can only be called a "mysterious" civilization. As expected, there are so many interesting civilizations in the world, and there seems to be an infinite number of things that need to be studied and discovered.