xpense of Byzantium and conquered almost the entire territory of today's Greece, except the Peloponnese and the islands. After he conquered the city of Serres, he was crowned the Emperor of Serbs and Greeks in Skoplje by the Serbian Patriarch on April 16, 1346. His goal was to become the successor of the Byzantine Emperors. Before his sudden death, Dušan the Mighty tried to organize a Crusade with the Pope against the threatening Turks. He died in December 1355 at the age 47. The Imperial constitution, the Dušan's Code (Serbian: Dušanov zakonik) was enacted in 1349 and added in 1354. The Code was based on Roman-Byzantine law. The legal transplanting is notable with the articles 171 and 172 of Dušan's Code, which regulated the juridical independence. They were taken from the Byzantine code Basilika (book VII, 1, 16-17). Dušan opened new trade routes and strengthened the state's economy. Serbia flourished, becoming one of the most developed countries and cultures in Europe. Medieval Serbia had a high political, economic, and cultural reputation in Europe.
Ottoman and Austrian rule
After the loss of independence to the Kingdom of Hungary and the Ottoman Empire, Serbia briefly regained sovereignty under Jovan Nenad in the 16th century. Three Austrian invasions and numerous rebellions constantly challenged Ottoman rule. One famous incident was the Banat Uprising in 1595 which was part of the Long War between the Ottomans and the Habsburgs. The area of modern Vojvodina endured a century long Ottoman occupation before being ceded to the Habsburg Empire in the 18th centuries under the Treaty of Karlowitz. As the Great Serb Migrations depopulated most of southern Serbia, the Serbs sought refuge across the Danube river in Vojvodina to the north and the Military Frontier in the west where they were granted rights by the Austrian crown under measures such as the Statuta Wallachorum of 1630. Ottoman control over Serbia meant that the once abolished
