Subject
- First World War (1914-1918)101
- Diplomacy75
- Mesopotamian Campaign (1914-1918)33
- Frontiers32
- Treaties32
- Concessions30
- International relations26
- Bilateral relations25
- Colonial administration25
- Railways25
- Rebellions25
- Arms traffic24
- Military operations24
- Expenditure22
- Imperialism21
- Boundaries20
- Loans19
- Armed forces16
- Military occupation16
- Trade (practice)16