A Maya city from the Classic Period usually consisted of a series of stepped platforms topped by masonry structures, ranging from pyramids and palaces to individual house mounds. These structures were in turn arranged around broad plazas or courtyards. Maya architecture is characterized by a sophisticated sense of decoration and art, expressed in carvings and wall paintings. At major sites like Tikal, large buildings and complexes might also have been interconnected by stone roads or causeways.<span>Maya cities were rarely laid out in neat grids, and appear to have developed in an unplanned fashion, with temples and palaces torn down and rebuilt over and over through the centuries. Because of this seemingly erratic pattern of settlement, the boundaries of Maya cities are often hard to determine. Some cities were surrounded by a moat, and some had defensive earthworks around them. City walls are rare at Maya sites, with the exception of some recently discovered cities dating from the collapse of Maya civilization, when protective walls were suddenly thrown up around cities under siege from outside enemies. The mayan cities were </span>arranged beautifully in my opinion.
a.Most Latin American countries do not have laws against air pollution.
