with each of these places came a large amount of high quality limestone, which was used to build strong freestanding structures, but the natural limestone also provides deep natural wells or Centos which help to bringing water to areas where it was in short supply and helped the staple crop, corn, grow into one of the most widely used crops of all time, people around the world eat corn to this day. The Mayan market, another key to Mesoamerican success, the sale and trade of jade, obsidian, beads, pieces of cloth and cocoa beans helped simulate the local economy and the use of a single widespread language made the their trade even more effectively without ever having to deal with the language Barriers were just another reason why the Mayan and other Mesoamerican cultures became strong enough to rival the vast Roman Empire. Unfortunately, due to the Spanish invasion, all Mayan religious books were destroyed because the Spanish religious leaders considered their writing evil, what little is known about their religion today is due to the fact that a handful of books managed to survive to Mayan censorship.