Complex sentence: Drawing upon Serbian archive and travelers documents historian Miloš Jagodić believes that the number of Albanians and Muslims that left Serbia was "much larger", agreeing with Đorđe Stefanović that the number was 49,000 Albanian refugees out of at least 71,000 Muslims that left.
Split into simpler sentences: Drawing upon Serbian archive and travelers documents historian Miloš Jagodić believes that the number of Albanians and Muslims that left Serbia was "much larger". Jagodić agrees with Đorđe Stefanović that the number was 49,000 Albanian refugees out of at least 71,000 Muslims that left.