At the turn of the twentieth century, Monastir's Jewish population reached nearly 11,000, but by 1914 years of emigration had reduced the community to just over 6,000. During World War I, Monastir suffered two invasions and two years of bombardment. More than 5,000 Monastir Jews fled their homes and lived as refugees in the surrounding area. When the war was over, Monastir's Jews numbered just over 3,000. Bitola became part of the new state of Yugoslavia, and in the 1920s and 1930s Zionism emerged as the dominant force among the local Jewish youth. During those years, 500 of these young men and women emigrated to Palestine.