Welp they both had two great oceans between them, a land invasion is near Impossible, and a sea attack would not be smart for the Central Powers/Axis
An Air attack needs refueling and no enemy had a close airbase plus we had anti air any attack on North America or any of the Americas is useless.
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why you still play that game
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Blocks most of the suns radiation from reaching the biosphere
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I think is are both constructive and destuctive
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Alaska shares the longest border with Canada of any state. ...
Idaho shares a 45-mile (72 km) long boundary with British Columbia. ...
Montana is the only American state that borders more than two Canadian provinces.
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sorry if this didn't help
i'm not sure