Answer:
England & France
Explanation:
The conflict spanned multiple generations of English and French contenders to the throne, and it lasted more than a century. According to convention, the war began on May 24, 1337, when French King Philip VI confiscated the English-held duchy of Guyenne, but this seizure had been preceded by intermittent conflict over the matter of English fiefs in France dating back to the 12th century. This conflict reduced the power of nobility.
