How did two men cause the Hundred Years' War? France's King Phillip Vl snatched land from King Edward lll and retalliation had to follow. The British King Edward lll first invaded France to claim he was King of not only England, but France as well. Two leaders with power trying to out-do each other. Actually not consistent 100 years of war but a series of conflicts, the time span was under 100 years.

Charles IV had died, unfortunately, he didn't have a son, but his first cousin, King Philip VI was named to be the successor. Philip VI snatched the duchy of Aquitaine from England in 1337 causing a declaration fo war from England.

Edward III King of England claimed right to the French throne and backfired when Philip refused to restore the lands he took (Guienne).

The conflict also involved control of Flanders, a key market for the English imports of wool and clothes.

The two men had started a Hundred Years War (1337–1453) a period well-characterized by the classic European realignments of power.

It was the time when Joanne of Arc emerged as a legendary source of inspiration for the French to seek rebellion against an English dominated world. As a female character, she was one of the first emblematic figures to appear leading a series of important battles in a major conflict.

The conflict yielded a crown for France ultimately yielding France victorious over the increasing influence and power of France.

Sadly, the conflict inflicted heavy casualities to the French, who suffered from famine, political unrest, and the Black Death. The victory was obtained at a very high cost.