Who was the first person to discover the nuclear fusion?

Nuclear fusion was not discovered by a single individual but rather developed through the contributions of many scientists. Key figures include Hans Bethe, who explained the process of fusion in stars in the 1930s, and Edward Teller, who played a significant role in the development of hydrogen bombs in the 1950s. The understanding of fusion has evolved over time, with various researchers contributing to the theoretical and experimental aspects of the process.