theme. The Empire regained the lost regions in the late 10th century until the Bulgarians regained control of the northern half at the end of the 12th century. Throughout the 13th century and the first half of the 14th century, the region was changing in the hands of the Bulgarian and the Byzantine Empire (excluding Constantinople). In 1265 the area suffered a Mongol raid from the Golden Horde, led by Nogai Khan, and between 1305 and 1307 was raided by the Catalan company. Ottoman period In 1352, the Ottoman Turks conducted their first incursion into the region subduing it completely within a matter of two decades and ruled it for five centuries in general peace. In 1821, several parts of Thrace, such as Lavara, Maroneia, Sozopolis, Aenos, Callipolis, and Samothraki rebelled during the Greek War of Independence. Modern history With the Congress of Berlin in 1878, Northern Thrace was incorporated into the semi-autonomous Ottoman province of Eastern Rumelia, which united with Bulgaria in 1885. The rest of Thrace was divided among Bulgaria, Greece and Turkey at the beginning of the 20th century, following the Balkan Wars, World War I and the Greco-Turkish War. In Summer 1934, up to 10,000 Jews were maltreated, bereaved, and then forced to quit the region (see 1934 Thrace pogroms). Today, Thracian is a geographical term used in Greece, Turkey, and Bulgaria. Notable Thracians Orpheus was, in Ancient Greek mythology, the chief representative of the art of song and playing the lyre. Protagoras was a Greek philosopher from Abdera, Thrace (c. 490–420 BC.) An expert in rhetorics and subjects connected to virtue and political life, often regarded as the first sophist. He is known primarily for three claims: (1) that man is the measure of all things, often interpreted as a sort of moral relativism, (2) that he could make the "worse (or weaker) argument appear the better (or stronger)" (see Sophism), and (3) that one could not tell if the gods existed or not (see Agnosticism). Herodicus was a Greek physician of the fifth century BC who is considered the founder of sports medicine. He is believed to have been one of Hippocrates' tutors. Democritus was a Greek philosopher and mathematician from Abdera, Thrace (c. 460–370 BC.) His main contribution is the atomic theory, the belief that all matter is made up of various imperishable indivisible elements which he called atoms. Spartacus was a Thracian