1798: First treaty with UK.
1842: Omani empire split.
1913: Tribal unrest.
1915: British repel interior tribes.
1920: Sultan and Imam sign treaty.
1952: UK and Omanis eject Saudis.
1954 onwards: Clashes between forces of Imam and Sultan.
1955-1959: Power of Imamate curbed Sultan and British.
1957: UK military intervention.
1959: Sultan controls interior.
1964: Oil discovered. UK intervene.
1965: UK refuses to withdraw.
1970: British coup.
1975: UK finally defeats rebels.
1980: Agreement with US.
1997: Women enter politics.
1999: Border agreement with UAE.
2001: Military exercises with UK.
2002: More voting rights.