Subject
- Civil aviation53
- Border disputes52
- Imperialism51
- Arms traffic48
- Mesopotamian Campaign (1914-1918)48
- Armed forces47
- Ships46
- Boundary disputes45
- Compensation45
- Embassies and consulates45
- Foreign policy45
- Napoleonic Wars (1800-1815)45
- Gifts44
- Cars43
- Military campaigns43
- Loans41
- Naval operations40
- Propaganda40
- Employment39
- Fortifications39