Mennonites are a Christian group that emerged in the 16th century during the Protestant Reformation. They are known for their commitment to pacifism, community living, and simple lifestyles. The movement is named after Menno Simons, a Dutch religious leader who helped shape its beliefs and practices. Mennonites value service, humility, and faith, often emphasizing the importance of living out their beliefs through actions. They can be found in various communities around the world, with some groups maintaining traditional practices, while others are more modern and integrated into society.