Timeline of everything By Doggypuppy2015 Period: 11,000 BCE to 9000 BCE First farmers 10,000 BCE A farmer’s best friend 9000 BCE Metalworking begins Period: 9000 BCE to 4000 BCE Prehistoric communities 8500 BCE Cows and pigs 8000 BCE Walled settlements 7000 BCE Sheep and goats 5500 BCE Irrigation 5000 BCE Rice bowl 4500 BCE Oldest gold treasure 4500 BCE The copper-stone age Period: 4000 BCE to 3000 BCE Early cities 3500 BCE Wheels for transportation 3500 BCE The first wheel 3300 BCE World’s first writing 3200 BCE Cuneiform 3100 BCE The bronze age Period: 2900 BCE to 2300 BCE Trading hubs 2600 BCE Sewer systems 2600 BCE Indus script 2500 BCE Chinese writing 2200 BCE Iron 2000 BCE Spoked wheel Period: 1850 BCE to 1650 BCE First alphabet 1200 BCE Chinese statues 1200 BCE Phoenician alphabet Period: 1200 BCE to 1101 BCE The Iron Age 800 BCE City-states 800 BCE Greek alphabet 800 BCE Brahmi script Period: 800 BCE to 300 Iron-age Europe 700 BCE Peru and Bolivia 600 BCE African iron 600 BCE Indian steel 500 BCE Cast iron 400 BCE Gears 300 BCE Archimedes’ screw 200 BCE Iron plow 100 BCE Water wheel 1 CE Record-breaking Rome 500 Astrolabe Period: 500 to 700 Byzantine bazaars 1000 Fieldwork 1100 Flywheel 1190 Replacement walls 1300 European blast furnaces 1300 Mechanical clock Period: 1400 to 1500 Crop swap 1493 Propeller Period: 1750 to 1800 Factory towns 1760 The Industrial Revolution 1794 Cotton gin 1807 Street lights 1831 Reaping rewards 1834 Electric motor 1837 Steel plow 1863 Underground railway 1866 Selective breeding 1885 Combine harvester 1885 Skyscrapers 1888 Pneumatic tires 1890 Tractor 1915 Tanks 1940 Green revolution 1990 Gm crops 2008 City slickers