Detail: The new prime minister of , , vowed never to surrender. An air battle called followed. Britain used to detect German bombers, so Hitler cancelled the .

The new prime minister of Britain, Winston Churchill, vowed never to surrender. An air battle called Battle of Britain followed.

Britain used Radar to detect German bombers, so Hitler cancelled the Battle of Britain.

Explanation:

The Battle of Britain was a military operation that happened during Second World War. The battle was between United Kingdom and Germany. During this battle, the Royal Air Force helped the United Kingdom in protecting themselves from the attacks by Germany's Nazi air force.

Air forces were used during the battle. Britain won the battle of Britain because they had a technology known as Radar and also they fought for defending their homeland. Radar helped Britain in finding the bombs. So they could defend themselves easily.

world bank is the correct answer.