Edirne's conquest of the Turks opened the way to the conquest of Balkans. Lala Sahin Pasha entered Bulgaria and received Plovdiv, while his commander, Evrenos Bey, took Serez (1363). Turks were settled in the new conquered places. The conquest of Edirne and Plovdiv led to the organization of a crusade. With the encouragement of Pope 5.Urban, Hungarians, Bosnian and Wallachians, especially the Serbs and the Bulgarians, act on Edirne by preparing a large crusader army. With the Haci Ilbey army from the Ottoman commanders, this situation was benefited by the enemies that went erratically along the Meric valley. Haci Ilbey, who organized a night raid by separating his forces, obtained a great victory (1364). This victory, known historically as the Sundin Serbian War, ensured the Turkish domination in Rumelia and neutralized the first Crusader army. Ottoman troops entered Bulgaria after the Serbian War of the Nile and conquered Bulgaria upwards. Bulgarian King Yuvan Fat, who understood that he could not resist, accepted the Ottoman Dominance and gave his sister Maria to Murat Hudavendigar (1369). The Ottoman Army marched on Macedonia. Macedonia joined the Ottoman lands with the Victorious Victory in 1371. The Serbian King Lazar, like the King of Bulgaria, accepted the Ottoman domination and was linked to the annual taxation. Turkish troops under the command of Candarli Hayrettin Pasha won the Thessaloniki Victory (1374). Niche (1375), Istip, Monastery, Pirlepe (1382) was conquered. The Ottoman troops rushed into Albania and Bosnia and Herzegovina. In 1385 Ohri was conquered. In the same year, Albania won the Savato victory. A year later the conquest of Sofia was realized. In 1381, Kutahya, Simav, Eyecurve and Rabbity were given to the Ottoman State for the marriage of Prince Bayezid's Germiyan Suleyman Shah's daughter to the State Hatun. In the same year, six cities were bought with money from sons of Hamid Principality. As the conquests in the Balkans continued, Sultan Murat turned to the Anatolian side. In 1386, the first Ottoman Karaman War was held in the Konya Plain. The progress of the Turks in the Balkans led to the organization of a new crusade. The Ottoman Army under the command of Vizier Candarli Ali Pasha, neutralized the Bulgarians. The Turkish Army went ahead and met with the Crusaders in Kosovo. The superior crusader army was dispersed by the effect of the gun used by the Artillery Squad, which was created by Sultan Murat First. The ball was first used in history by the Turks in the Battle of 1.Kosovo. After this war, the Turkish dominance in the Balkans strengthened but Murat Hudavendigar became a martyr. Sultan 1.Murat was a great sultan, who succeeded in reaching 500,000 km² of state lands, from 95,000 km² of state lands in the death of his father Orhan Bey.