Tetovo, city in northwestern Former Yugoslav Republic of Macedonia (FYROM), located in a valley at the southeastern foot of the Sar Planina mountain range. Tetovo is the country's second largest city after the capital, Skopje. It has industries producing textiles, chemicals, leather goods, lumber, and tobacco and food products. Architectural monuments include several mosques dating from the 17th century, most notably the richly painted Sarena Dzamija Mosque. A college for the study of economics is located here. Tetovo was first settled in the 7th century. It developed as a trade center on the road leading to the region of Kosovo to the north. Invaded by Turks in the 14th century, Tetovo became part of the Ottoman Empire until 1913, when it was ceded to Serbia after the Balkan Wars and became part of the Kingdom of the Serbs, Croats, and Slovenes (renamed Yugoslavia in 1929). In 1943, during World War II, the Communist Party of Macedonia was formed here. In 1991 Tetovo became a part of independent FYROM. Population (1994) 50,376.