Subject
- Telegraph lines[remove]13
- Diplomacy5
- Telegraphs5
- Indo-European Telegraph Line2
- Roads2
- Telegraph poles2
- Accommodation1
- Arms transfers1
- Communication routes1
- Customs administration1
- First World War (1914-1918)1
- Local government1
- Military operations1
- Negotiation1
- Postal services1
- Telecommunications networks1
- Telegraphy1
- Telephone1
- Transport infrastructure1