In the 1800s, what new technology imperial nations communicate quickly with their colonies in other parts of the world? radio railroad steamship telegraph

The new technology that helped imperial nations to communicate quickly with thei colonnies in other parts of the world was the telegraph,

Telegraph

Explanation:

The telegraph was created by Samuel Morse in 1830s and 1840s. It transmitted electrical signals over a wire laid between stations, Morse also created his code that assigned a sets of dots and dashes to each letter and allowed the transmission of complex messages across the telegraph.

This new invention helped imperial nations to communicate, information came quickly from European powers and the code made easier to pass complex information easily.

the exclusive possession or control of the supply or trade in a commodity or service.