Maya's civilization practices are: c) predicted eclipses and developed a 365-day calendar d) made human sacrifices to appease the gods
Other facts about Maya's Civilization are: 1) Maya were fierce and warlike based on the the glyphs discovered and studied by modern researchers. 2) Maya were literate and had a written language and books 3) Maya believed that the Sun, Moon, and Planets were gods moving back and forth between the heavens, the underworld, and the earth. 4) Maya were extensive traders. They traded for prestige items(luxuries) and subsistence items(basic necessities). 5) Maya had royal families. Maya rulers claimed to be descended directly from the sun, moon or planets, giving them divine ancestry.
Because a command economy is being used in china and china's economy is going very well hence the question, Command economies have completely succeeded each time they have been used.
