This era of relative prosperity ended in 1975 when the Lebanese Civil War broke out throughout the country, During most of the war, Beirut was divided between the Muslim west part and the Christian east. The downtown area, previously the home of much of the city's commercial and cultural activity, became a no man's land known as the Green Line. Many inhabitants fled to other countries. About 60,000 people died in the first two years of the war (1975–1976), and much of the city was devastated. A particularly destructive period was the 1978 Syrian siege of Achrafiyeh, the main Christian district of Beirut. Syrian troops relentlessly shelled the eastern quarter of the city, but Christian militias defeated multiple attempts by Syria's elite forces to capture the strategic area in a three-month campaign later known as the Hundred Days' War.