Nikola Tesla's life was defined by several key events, including his emigration to the United States in 1884, where he worked with Thomas Edison before eventually branching out on his own. He developed the AC power system, which revolutionized electricity distribution, and invented numerous devices, including the Tesla coil. Tesla’s visionary ideas often clashed with the commercial world, leading to struggles in funding and recognition. His dedication to innovation pushed the boundaries of technology, but his later life was marked by financial hardship and isolation. Ultimately, Tesla's contributions laid the groundwork for modern electrical engineering.