1. Who is credited with elevating the principle of Ahimsa to a universal ethical principle in the 20th century?
Mahatma Gandhi
Explication
Mahatma Gandhi is recognized for elevating Ahimsa, the principle of non-violence, to a universal ethical principle during the 20th century. Although other figures like Martin Luther King Jr. also promoted non-violence, Gandhi's role in this context is explicitly highlighted in the content as a key proponent of Ahimsa.