Nikola Tesla was born in 1856 in Austria-Hungary and was an inventor, electrical engineer, mechanical engineer, and futurist best known for his contributions to the design of the modern alternating current (AC) electricity supply system. He immigrated to the United States in 1884 to work for Thomas Edison but later worked with George Westinghouse, where he helped develop AC power systems. Some of his notable inventions and contributions included the induction motor and developing the first hydroelectric power plant at Niagara Falls. He spent his later years conducting experiments in wireless telegraphy and developing ideas for particle beams and radio-controlled devices. Tesla died in 1943 in New York City.