It left fewer british troops to fight in north america
Possibly the last one or the third one.
Ordinary colonists were able to learn more and know more skills to be able to do more things that they cannot do. For example, cook, chop wood, gather food, etc
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The allies agreed on a "Europe First" strategy because only Germany had the ability to bomb Britain, fight U.S and British Navies, and B. Seriously threaten to defeat the soviet Union
The Allied than concluded that Germany is a serious long term Threat and should be taken care of as soon as possible
hope this helps