Why did the French troops begin to suffer defeat at the beginning of the 15th century?

In the 15th century, the Hundred Years War entered the second phase, then an internal state conflict flared up in France between the Armagnacs and the Burgundians, which greatly aggravated the position of the French kingdom in the war with England. The English king skillfully used the internal contradictions in France, and ultimately took the side of the Burgundians.



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