Nikola Tesla is recognized for several notable achievements, including the development of the AC (alternating current) electrical system, which revolutionized electricity distribution. His invention of the induction motor and the Tesla coil showcased his ingenuity in electrical engineering. Tesla also contributed to wireless communication, laying foundational work for modern radio technology. His vision for wireless energy transmission and concepts like radar and remote control further demonstrate his innovative spirit. Despite his significant contributions, Tesla struggled with recognition and financial stability during his lifetime.