Founded the first Islamic state which was a theocracy in Medina, a city in western Saudi Arabia.
Because of his death, the leadership of the Islamic community was passed onto Abu Bakr. Some people believed that the title belonged to Ali ibn Abi Talib. Supporters of Abu were the Sunnis and those of ibn Ali were the Shia.
Ali was murdered
Caliphate was passed to Muawiya, and he found the famous Umayyis Caliphate. Ali's burial site is a major Shia holy site.
12th Imam went into hiding
The succession ended when the 12th Imam went hiding. Shia believe that the 12th Imam will reemerge someday as the Messiah or Mahdi
Mongols destroy Baghdad
This ended the Sunni Arab caliphate.
Arabs revolt against British control of Iraq
1920 - 1922
Shia and Sunni muslims revolt against the British control of Iraq.
Iraq and Iran War
1980 - 1988
Iran was a Persian Shia country, and the leadership of Iraq was Sunni Muslim. Most Sunni Muslim governments supported Iraq during the war.
Shia rebel against Saddam Hussein
Shia of southern Iraq rebel against Sadddam. He puts down the rebellion brutally. Thousands of Shia are killed.
9/11 attack on World Trade Center
Al-Qaida, which was lead by Sunni Muslim fundamentalists, attack the World Trade Center. United States rebel and invade Afghanistan and outs the Sunni Taliban government.
Shia political parties in power in Baghdad
2005 - 2006
Iraqi elections bring Shia political parties to power in Baghdad, and Sunni-Shia sectarian violence intensifies.