Why was joan of arc important in the hundred years' war?

Term houdnred years war was coined in 19th century and for most of it's time it was just few campaigns and battles between which were decades of truce, bbut after henry v of enngland died in 1422 (he deicded to marry of doughther of king of france to end the war) and his son had juz 9 months french decided that he will not inherit the throne of france thefore english decided to introtuced occupation of half of franc eincluding paris and for the first time the conflicted affted msot of social groups joan of arc as a charasmatic leader broke to occupation of many territories in short time and united french against the english