Subject
- International relations[remove]166
- Treaties24
- First World War (1914-1918)23
- Foreign policy20
- Diplomacy17
- Mesopotamian Campaign (1914-1918)16
- Colonial administration15
- Military operations11
- Slave trade11
- Second World War (1939-1945)9
- Imperialism8
- Naval operations8
- Trade (practice)7
- Oilfields6
- Boer War (1899-1902)5
- Financial administration5
- Loans5
- Railways5
- Russo-Persian War (1804-1813)5
- Boundary disputes4