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4000 BC: Probable time period of the first diamond-mines in the world, in Southern India. [125] 4000 BC: Paved roads, in and around the Mesopotamian city of Ur, Iraq. [126] 4000 BC: Plumbing. The earliest pipes were made of clay, and are found at the Temple of Bel at Nippur in Babylonia. [127] [b]
Many early innovations of the Bronze Age were prompted by the increase in trade, and this also applies to the scientific advances of this period. For context, the major civilizations of this period are Egypt, Mesopotamia, and the Indus Valley, with Greece rising in importance towards the end of the third millennium BC.
List of Indian inventions and discoveries; List of Indonesian inventions and discoveries; List of inventions and discoveries of the Indus Valley Civilisation; List of inventions named after people; List of inventors killed by their own invention; Timeline of Irish inventions and discoveries; List of inventions in the medieval Islamic world
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For the first time, double-sided records and those with a diameter of 30 cm are produced, increasing playing time up to 11 minutes (5.5 minutes per side). These are created by Odeon in Berlin and debuted at the Leipzig Spring Fair. The German physicist Arthur Korn developed the first practical method for telegraphy.
The company had a quarter century of innovation by then, developing products But Apple's innovations didn't begin with the iPod in 2001. Apple's 5 Greatest Innovations
The following articles cover the timeline of United States inventions: . Timeline of United States inventions (before 1890), before the turn of the century Timeline of United States inventions (1890–1945), before World War II
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