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The Wheel allows the building of chariots, a fast offensive unit.

It is a prerequisite of engineering.


One of the five great simple machines, the Wheel and axle greatly increased the load that a human or animal could pull by lowering the resistance to movement. The Wheel was also quickly turned into a weapon of war after its invention, especially in the adaptation of the Chariot. In addition to its use in transport, the Wheel became a vitally important tool in Engineering and in the Industrial Age. In the pre-Columbian New World, the Wheel only appeared in children's toys, partly because the mountainous terrain of South America made it less practical.

Civilization Advances

Advanced FlightAlphabetAstronomyAtomic TheoryAutomobileBankingBridge BuildingBronze WorkingCeremonial BurialChemistryChivalryCode of LawsCombustionCommunismComputersConscriptionConstructionCorporationCurrencyDemocracyElectricityElectronicsEngineeringExplosivesFeudalismFlightFusion PowerFuture TechGenetic EngineeringGunpowderHorseback RidingIndustrializationInventionIron WorkingLabor UnionLiteracyMagnetismMap MakingMasonryMass ProductionMathematicsMedicineMetallurgyMonarchyMysticismNavigationNuclear FissionNuclear PowerPhilosophyPhysicsPlasticsPotteryRailRoadRecyclingRefiningReligionRepublicRoboticsRocketrySpace FlightSteam EngineSteelSuperconductorTheory of GravityTradeUniversityWheelWriting