What were the social and economic characteristics of the first civilizations in Asia and Northeast Africa?

Please give examples from Egypt, Mesopotamia, India, and China. Please use the following link for resources, as well as any other you deem necessary. http://www.rivervalleycivilizations.com/indus.html http://www.rivervalleycivilizations.com/nile.html http://www.bbc.co.uk/history/ancient/egyptians/nile_01.shtml http://www.rivervalleycivilizations.com/yellow.html http://www.rivervalleycivilizations.com/tigris-euphrates.html http://www.rivervalleycivilizations.com/neolithic.html http://history-world.org/agriculture_and_the_rise_of_civi.htm https://umuc.equella.ecollege.com/file/003f3e1a-4c63-43bd-b7d2-be613951dacd/1/Ancient Egypt.pdf http://ezproxy.umuc.edu/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=a9h&AN=48874287&site=eds-live&scope=site https://umuc.equella.ecollege.com/file/15116dcd-ec1e-4e99-8ee2-0c680e9d9ca0/1/AmericaAD101to200MexicoCentralAmericaandtheCaribbean,.pdf