The central Balkans were part of the Roman and Byzantine Empires before ethnic Serbs migrated to the territories of modern Kosovo in the 7th century. During the medieval period, Kosovo became the center of a Serbian Empire and saw the construction of many important Serb religious sites, including many architecturally significant Serbian Orthodox monasteries. The defeat of Serbian forces at the Battle of Kosovo in 1389 led to five centuries of Ottoman rule during which large numbers of Turks and Albanians moved to Kosovo. By the end of the 19th century, Albanians replaced Serbs as the dominant ethnic group in Kosovo. Serbia reacquired control over the region from the Ottoman Empire during the First Balkan War of 1912. After World War II, Kosovo's present-day boundaries were established when Kosovo became an autonomous province of Serbia. The 2006-07 negotiations ended without agreement between Belgrade and Pristina, though the UN issued a comprehensive report on Kosovo's final status that endorsed independence. On 17 February 2008, the Kosovo Assembly declared Kosovo independent. Serbia continues to reject Kosovo's independence, but the two countries reached an agreement to normalize their relations in April 2013 through EU-facilitated talks and are currently engaged in the implementation process. Kosovo seeks full integration into the international community, and has pursued bilateral recognitions and eventual membership in international organizations, such as the UN, EU, and NATO. Life for Relief and Development Provided emergency food aid to families affected by the war in 1999.