The 8th century BCE started the first day of 800 BC and ended the last day of 701 BC. The 8th century BC is a period of great change for several historically significant civilizations. In Egypt, the 23rd and 24th dynasties lead to rule from Nubia in the 25th Dynasty.
The Chinese hydraulic engineer Ximen Bao (西門豹) oversees an enormous canal system for agricultural irrigation, while employed by Marquis Wen of Wei (文侯) (445 BC–396 BC). The Chinese philosopher Li Kui writes the Book of Law (Fajing, 法经) in 407 BC , the basis for the law codes of the following Qin Dynasty and partially that of the ...
c. 2600–2500 BC: The Instructions of Shuruppak, the earliest known literary texts, are created in Adab, Shuruppak and Abu Salabikh. 2570 BC: Reigns of Uhub, king of Kish, and of En-hegal, king of Lagash. 2560–2525 BC: Reign of Mesannepada, king of Ur. The city, which had only 4,000 citizens at the time, would become a large capital during ...
c. 4000 BC, more than 100 dwellings surrounding a community center, a cemetery and a kiln are built in Jiangzhai, near modern Xi'an, China Susa is a center of pottery production; c. potter's wheel in Mesopotamia 
The 21st century BC was a century that lasted from the year 2100 BC to 2001 BC. Events [ edit ] Ur-Nammu (seated) bestows governorship on Ḫašḫamer, patesi (high priest) of Iškun- Sin (cylinder seal impression, ca. 2100 BC).
The Post Track, an ancient causeway in the Somerset Levels, England, is built, c. 3838 BC.It is one of the oldest engineered roads discovered in Northern Europe.; The Sweet Track, an ancient causeway also in the Somerset Levels, the oldest timber trackway discovered in Northern Europe, is built in 3807 BC or 3806 BC; tree-ring dating (dendrochronology) enabled very precise dating.
The 6th century BC started the first day of 600 BC and ended the last day of 501 BC. In Western Asia , the first half of this century was dominated by the Neo-Babylonian Empire , which had risen to power late in the previous century after successfully rebelling against Assyrian rule.