Muslims living in Spain greatly. Shortly after 1492, when the last outpost of Muslim presence in the Iberian Peninsula, Granada, was conquered, the Spanish decreed that all Muslims must either vacate the peninsula without their belongings or convert. Many people overtly converted to keep their possessions while secretly practicing their religion. Muslims who converted were called Moriscos. They were required to wear upon their caps and turbans a blue crescent. Traveling without a permit meant a death sentence. This systematic suppression forced the Muslims to seek refuge in mountainous regions of southern Andalusia; Ronda was one such refuge. On May 25, 1566, Philip II decreed the use of the Arabic language (written or spoken) illegal, required that doors to homes remain open on Fridays to verify that no Muslim Friday prayers were conducted, and levied heavy taxes on Morisco trades. This led to several rebellions, one of them in Ronda under the leadership of Al-Fihrey. Al-Fihrey's soldiers defeated the Spanish army sent to suppress them under the leadership of Alfonso de Aguilar. The massacre of the Spaniards prompted Phillip II to order the expulsion of all Moriscos in Ronda. In the early 19th century, the Napoleonic invasion and the subsequent Peninsular War caused much suffering in Ronda, whose inhabitants were reduced from 15,600 to 5,000 in three years. Ronda's area became the base first of guerrilla warriors, then of numerous bandits, whose deeds inspired artists such as Washington Irving, Prosper Mérimée, and Gustave Doré. In the 19th century, the economy of Ronda was mainly based on agricultural activities. In 1918, the city was the seat of the Assembly of Ronda, in which the Andalusian flag, coat of arms, and anthem were designed. Ronda's Romero family—from Francisco, born in 1698, to his son Juan, to his famous grandson Pedro, who died in 1839—played a principal role in the development of modern Spanish bullfighting. In a family responsible for such innovations as the use of the cape, or muleta, and a sword especially designed for the kill, Pedro in particular transformed bullfighting into "an art and a skill in its own right, and not simply ... a clownishly macho preamble to the bull's slaughter". Ronda was heavily affected by the Spanish Civil War, which led to emigration and depopulation. The scene in chapter 10 of Hemingway's For Whom the Bell Tolls, describing the 1936 execution of Fascist sympathisers in a (fictional) village