What innovation or invention made suspension bridges possible?

1 Answer
Dave H.
Mar 26, 2018

Rope

Explanation:

Suspension Bridges date back into antiquity they certainly were built in Tibet in the 1430's

In the western world it was the invention of wrought iron chains that allowed suspension bridges to span ever larger gaps

Related questions
Impact of this question
1794 views around the world
You can reuse this answer
Creative Commons License