One of the major uses for the telegraph was the first funds transfers that could happen quicker than moving paper (or bullion) from one location to another. London banks would telegraph correspondent banks in India, Australia, etc.
This essentially doubled the capital intensity of international trade since the goods had to move in one direction but the money could be sent instantaneously in the other.
When the pound replaced the Spanish silver dollar as the default global currency, it did so with a nascent international banking system where banknotes issued by a certain bank in a certain location could be exchanged by other banks in other locations.
Payments were thus often settled in metal rather than being transacted with it.
This essentially doubled the capital intensity of international trade since the goods had to move in one direction but the money could be sent instantaneously in the other.