7 Chrismases
England and France and various allies of France
It was between France and England.
The "hundred years war" was fought from 1337 to 1453 between England and France
Fewer white Christmases were experienced after 1752 because the calendar was changed from the Julian to the Gregorian in 1752 in the UK, thus effectively shifting Christmas 11 days earlier. The change had taken place in much of Europe well over a hundred years earlier, but did not take place in Russia until after the Revolution, in about 1920, so by that time the shift was 15 days.
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The Hundred Years War involved England and France, not the U.S. The U.S. was not even a country when the Hundred Years War was fought.
France and England fought the hundred years war because England wanted control of France.
France and England
England and France
The Hundred Years' War was a series of conflicts between the rulers of France and England
The war pitted England against France from 1337-1453.
The two countries fighting in the Agincourt Hundred years war were France and England. And just to let you know... it was 116 years.