Topic > receives rain and contains tropical and subtropical areas with many lakes. The southern Maya highlands are, in general, cool and covered in dense vegetation and volcanoes. SOMETHING ABOUT Guatemala. The history of the Maya people is usually divided into five different periods: the preclassic era from 1800 BC to 250 AD, the classical era from 250 AD to 900 AD, the postclassic era from 900 AD to 1500 AD, the colonial period from 1500 AD to 1800 AD and the post-colonial period from 1821 to the present (CITE FRO...... middle of document ......ve and maintain a stable environment so that people might be able to visit the site, it is said, however until then the entrance tunnel was buried to keep it away from moisture, climate and possible looters What makes the Mayan civilization so fascinating is that, compared to other Mesoamerican civilizations, i Maya were never truly united in political terms. What the Maya had were a series of city-states independent of each other, but united by a similar culture, however none ever became large enough to unite the Maya into one; empire Like all other Mesoamerican civilizations, the Mayan civilization can be defined by a series of growth and decline, but what makes the Mayans (ADJ) different from other Mesoamerican civilizations is that the Mayan people are still present and thriving today. FINAL PHRASE.