That would be radar.
This was a key battle between Britain's RAF (Royal Air Force) and the Luftwaffe, if the Germans would've won most likely Britain would've been German; and many different outcomes could've happened in the past.
But, since radar was invented, and the British employed it in their tactics; that along with the communication between them helped repel the attack in the Battle of Britain.
It’s was Russia because they had 1,700,000 killed and 4,900,,000 injuries
<span>The King and Parliament believed they had the right to </span>tax<span> the </span>colonies<span>.
They decided to require several kinds of </span>taxes<span> from the </span>colonists<span> to help pay for the French and Indian War.
The </span>colonists<span> started to resist by boycotting or not buying </span>British<span> goods.</span>
