The first step in Sultan Bayezid II’s policy was to advance in Roumelia. Bosnia was captured during Mehmet II’s period. But, Herzegovina could not have captured yet. He sent raiders to this region and they invaded in 1483. The castles of Kilia and Akkerman in Moldavia were captured and Moldavia was imposed taxes. In 1491, Hungary campaign was made. In May 1499, Greece Campaign was made.