Britain in an attempt to nationalize the production of sulfur from the two volcanoes located in Naples and Sicily respectively. The Aspromonte was the scene of a famous battle of the unification of Italy. During the late 19th or early 20th century, pianist and composer Alfonso Rendano invented the "Third Pedal", which augmented the interpretative resources of the piano. The ancient Greek colonies from Naples and to the south, had been completely Latinized, but from the fifth century AD onward Greeks had once again emigrated there when pressed out of their homeland by invasions. This Greek Diaspora allowed the ancient Greek dialects to continue in Southern Italy, much in the same way that the Italian Diaspora allowed long-lost dialects from Italy to thrive in countries where Italians emigrated to. Greek texts were also valued in monasteries and places of learning. However it was Charlemagne in the 8th century, who made Latin the 'official' language of study and communication for Europe. For the sake of uniformity, he supplanted much of the Greek spoken, read or taught in Europe. It was through language (Latin) and education (Latin texts) that Charlemagne united Europe. During the 13th century a French chronicler who traveled through Calabria stated that "the peasants of Calabria spoke nothing but Greek" given he had traveled to areas where Greek was still available. But the educated classes spoke Italian. Indeed, formal Italian has been taught in schools throughout Italy for nearly two centuries, causing the ancient languages and dialects to continually disappear, much to the chagrin of the cultural community. These lost dialects continue to thrive to this day in North America and Australia, places where Italians emigrated to, on account of the Diaspora. Modern era On 19 August 1860, Calabria was invaded from Sicily by Giuseppe Garibaldi and his Redshirts as part of the Expedition of the Thousand. Through King Francesco II of Naples had dispatched 16,000 soldiers to stop the Redshirts, who numbered about 3,500, after a token battle at Reggio Calabria won by the Redshirts, all resistance ceased and Garibaldi was welcomed as a liberator from the oppressive rule of the Bourbons wherever he went in Calabria. Calabria together with the rest of the Kingdom of Naples was incorporated in 1861 into the Kingdom of Italy. Garibaldi planned to complete the Risorgimento by invading Rome, still ruled by the Pope protected by a French garrison, and began with