Subject
- Second World War (1939-1945)48
- Slave trade42
- Treaties37
- Concessions, Oil, Bahrain34
- Slave emancipation32
- Concessions30
- Smuggling30
- Exports28
- Petroleum industry28
- Boundaries26
- Pearl industry and trade26
- Airfields24
- Customs administration24
- Date Gardens23
- Imports23
- Air force22
- Bilateral relations22
- Civil aviation21
- Land ownership20
- Sovereignty19