Original sentence: At the start of the 20th century Henry Charles Lea published the influential and groundbreaking History of the Inquisition in Spain.Before the rise of professional historians in the 19th century, the Spanish Inquisition had largely been studied and portrayed by Protestant scholars who saw it as the archetypal symbol of Catholic intolerance and ecclesiastical power.Despite widespread recognition of Lea's scholarly accomplishment, it has been criticised as being impeded in part by an anti-Catholic bias.The 19th century professional historians, including the Spanish scholar Amador de los Rios, were the first to challenge this perception and look seriously at the role of Jews and Muslims.The Spanish Inquisition for them was largely associated with the persecution of Protestants