The document provides a timeline of key events that contributed to civil war in Lebanon: - 1958: Arab nationalism led to rebellion that strengthened the Lebanese government with US intervention - 1969: Agreement allowed PLO to oversee Palestinian refugee camps in southern Lebanon - 1970s: Muslims, especially Shi'a, called for a new constitution due to demographic changes - 1974: Amal movement formed by Shi'a to promote political and economic status, inspired by PLO