Subject
- Slave trade5
- Diplomacy4
- Piracy4
- Administration3
- Imperialism3
- Political intelligence3
- Refugees3
- Tariffs3
- Fortifications2
- Frontiers2
- International law2
- Visas2
- Bilateral relations1
- Civil engineering1
- Coffee trade1
- Commercial interests1
- Consular services1
- General Treaty with the Arab Tribes of the Persian Gulf (1820)1
- Intelligence1
- International relations1