The Diet of Worms in 1521 was a significant event in the Protestant Reformation. It was an imperial assembly of the Holy Roman Empire convened to address the issues raised by Martin Luther's teachings and writings, particularly his "95 Theses" which criticized the Catholic Church's practices, such as the sale of indulgences.
During the Diet, Luther was asked to recant his works but he refused to withdraw his critiques of the Church. His famous declaration, "Here I stand, I can do no other," demonstrated his commitment to his beliefs. The Diet ultimately issued the Edict of Worms, which declared Luther an outlaw and prohibited his writings. This event marked a crucial moment in the Reformation, solidifying the divide between Protestantism and Catholicism and leading to significant political and religious upheaval in Europe.