Subject
- Second World War (1939-1945)43
- Slave trade38
- Treaties35
- Concessions, Oil, Bahrain34
- Slave emancipation30
- Smuggling30
- Concessions28
- Exports27
- Boundaries26
- Pearl industry and trade25
- Airfields24
- Petroleum industry23
- Customs administration22
- Date Gardens22
- Imports22
- Air force21
- Civil aviation20
- Land ownership20
- Bilateral relations19
- Claims18