Pre-1500 Innovation: A Timeline By tannerk316 4000 BCE Sailboat 3000 BCE Lever 3000 BCE Abacus 2000 BCE Nail 1000 BCE Cement 99 Clock 199 Paper 299 Archimedes Screw 999 Gunpowder 1099 Paper Money 1199 Compass 1299 Optical Lenses 1430 Printing Press