Though it did not originate there, the Mayan civilization is usually credited as having fully developed which of the following? A.calendar B.irrigation C.written language D.the concept of zero
AThe Calendar. Through the supposed end of the world, back in 2012, a number of people tried to blame this on the Mayan's. however, this was not relevant, as they had missed out a number of days, meaning that it was pointless.