Final answer:
England and France engaged in the Hundred Years' War over territorial claims and succession rights, resulting in a century-long conflict with periods of conflict and truces. France emerged as the dominant kingdom of western Europe.
Step-by-step explanation:
England and France engaged in the series of conflicts known as the Hundred Years' War due to territorial claims and succession rights. The war started in 1337 when the French king Charles IV died without a direct heir, and King Edward III of England claimed to be the rightful heir to the crown of France. This led to a century-long war between the two kingdoms, with periods of conflict alternating with truces. The war ultimately left France in control as the dominant kingdom of western Europe.