Final answer:
The telegraph was the new technology in the 1800s that helped imperial nations communicate quickly with their colonies around the world.
Step-by-step explanation:
In the 1800s, the new technology that helped imperial nations communicate quickly with their colonies around the world was the telegraph. The telegraph allowed for the transmission of messages over long distances using electrical signals. It revolutionized communication as it enabled real-time communication between distant locations, reducing the time it took for information to travel.
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