Which was a first step in the development of both the Chinese and Mesopotamian societies into civilizations?
Development of irrigation
The Mayans were geographically isolated from some civilizations at their time. Civilizations like Greece, Rome, Chinese, Indian, Egyptian, and Mesopotamian people were separated by the Atlantic ocean and at the time no one had the technology to cross it. But in South America there were Aztecs, Tapotec, Mixtec, Olmec, Toltec, and Teotihuacan and Inca populations.
What are the similarities and differences of the Mesopotamian Egyptian Indian and Chinese civilization?
Only to the Mayan, Olmec and Teotihuacan civilizations which were also located in Mesoamerica. There is much debate whether Aztecs knew about other American civilizations such as Incans (in Peru, South America). It is also very hard to believe they knew about civilizations such as Egyptians (Middle East) or Chinese (Asia).