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.
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The government should invest more money in agriculture.
Answer:First, a parliamentary democracy is less likely to encounter gridlock than a presidential democracy is. In a parliamentary system, there cannot be a situation in which the chief executive is from one party while the legislature is (in whole or in part) controlled by a different party. This makes the parliamentary system more efficient.
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Answer to the following question is as follows;
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Civilized society has lengthy and important played a key role in attempting to influence the state's government welfare policy, verbalising views on current issues, trying to serve as a speaker of healthy discussion, having provided a platform for discussion of innovative knowledge and information, and launching social movements through the creation of new ideology.