Electric tram
TL;DR
Electric tram - requires enrichment with adjacent possible narrative
The picture shows the Gross-Lichterfelde tram in Berlin in 1882, the first commercially successful line
What Had To Exist First
Preceding Inventions
Required Knowledge
- Rail
What This Enabled
Inventions that became possible because of Electric tram:
Biological Patterns
Mechanisms that explain how this invention emerged and spread: