6th millennium BC

	6th millennium BC (7th millennium BC – 6th millennium BC – 5th millennium BC – other millennia \nEvents: Agriculture appears in the valley of the Nile\n* Rice cultivated in Asia\n* Wheel and plough invented\n* circa 5600 BC – The Black Sea floods with salt water\n* September 1, 5509 BC – day of creation of the world (according to the Byzantine Empire) and beginning of their calendar [1]\n* circa 5500 BC – pottery at Mehrgarh in South Asia\n* 5400s BC – Irrigation in Mesopotamia;Chinese astrologers record a nova in the constallation Taurus, it will become known as the Crab Nebula\n* 5100s BC – Templess founded in South Mesopotamia \n\n \n\n\n
	"The concept is interesting and well-formed, but in order to earn better than a 'C', the idea must be feasible." - A Yale University management professor in response to student Fred Smith's paper proposing reliable overnight delivery service (Smith went on to found Federal Express Corp.)

encyclopedia.codeboy.net