At the same time southern France gave birth to Occitan literature, which is best known for troubadours who sang of courtly love. It included elements from Latin literature and Arab-influenced Spain and North Africa. Later its influence spread to several cultures in Western Europe, notably in Portugal and the Minnesänger in Germany. Provençal literature also reached Sicily and Northern Italy laying the foundation of the "sweet new style" of Dante and later Petrarca. Indeed, the most important poem of the Late Middle Ages, the allegorical "Divine Comedy," is to a large degree a product of both the theology of Thomas Aquinas and the largely secular Occitan literature.