Madrid, Aug 26 (EFE).- The decline of the Maya civilization began some 1,100 year ago when millions of Indians working on the contruction of tall pyramidal temples and palaces learned that their kings weren't gods, Spanish anthropologist Andres Ciudad told EFE. The collapse of this culture with its brilliant mathematicians, astronomers and engineers, came when monarchs stopped being immortal in the eyes of their subjects, said Ciudad, who is deputy dean of the Faculty of Geography and History at Madrid's Universidad Complutense. The inhabitants of Mayan lands, which extended through much of what is now Guatemala, El Salvador, Belize, Honduras...