Political power is divided between Shi'is , Sunnis and Christians. It's the Christians benefiting most from this structure, by collaborating with the French. Joint occupation by British and free French forces. The French government in London recognizes Lebanese independence. Real independence for Lebanon, after the last French troops have left.
Christians assume the leading position in politics, and in the economy.
Palestinians come to play an important, if indirect, part in Lebanese politics. A coup promoting union with Syria, fails. A new coup promoting union with Syria, fails. Syria establishes its presence inside Lebanon, with the blessings from the Arab League. Israeli invasion of southern Lebanon, searching for PLO bases.