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The lower reaches of the Nile River in northeastern Africa。Ancient Egyptians created pictographic text，Formulated the world's earliest "solar calendar"，and you will use geometry to calculate various area，Constructed a well -known pyramid。

　　Lianghe civilization

Origin from the Dagris and the Euphrates River Basin。Cuba Babylon created wedge -shaped text，and the earliest codes in the world "Hammurabi Code"，And learned to observe monthly food with the naked eye。

　　Indian civilization

Disposal in the Indian River、Ganges Basin，Famous cities include Mohengzo Darlo and Harapa。Ancient Indians invented the general counting method to this day，Created 10 counting symbols including "0"，bet365 live casino games Complete the decimal，It was later adopted by the Arabs，Pass to Europe，Known as "Arabic Number"。

　　Chinese civilization

Fuck in the Yellow River Basin。From the Oracle Bone, there are texts that can be tested in text，The stepmother Wu Daoding cast by the Shang Dynasty is currently the world's largest bronze ware。The Chinese nation has built the world -famous Great Wall，Created with a compass、Paper -making、​​A large number of technology inventions represented bet365 live casino games by gunpowder and printing。In the four civilizations，Chinese civilization is the only great civilization that has not been interrupted。