Tesla's AC electrical revolution triumphed over Edison's DC empire through superior long-distance transmission capabilities & rotating magnetic field principles that enabled modern power grids. The 1893 Chicago World's Fair showcased AC's superiority with spectacular electrical displays, while Westinghouse's strategic investment in Tesla's patents created the foundation for global electrical infrastructure. Despite dying in poverty, Tesla's innovations continue powering contemporary civilization through AC motors, transformers, & grid systems that distribute electricity worldwide while enabling renewable energy integration.