What technological advantage did they have in the battle of britain?

The British developed an air defense network which added a critical advantage in the Battle of Britain. Radar used in the battlefield was an advantage for the Britain.

Explanation:

Radar was invented by Robert Watson-Watt, and uses radio waves to detect warplane, ship, motor vehicles. Radar can also be used in space research center and weather forecasting.

In the Battle of Britain, German warplanes are tracked with the help of radar. This tracking information helped Britain fighters to attack the German.

Royal Air Force helped in winning the Battle of Britain. Air defense network and radar played an important in winning the battle against Nazi Germany.

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