Iwill give brainiest i need

which weapon brought significant changes to warfare during the hundred years' war?

a.
longbow

b.
crossbow

c.
sword

d.
spear

why did the flemish support edward iii's claim to the throne of france?

a.
the french had been seizing flemish territory.

b.
they wanted the english to rule flanders.

c.
their textile industry depended on english wool.

d.
they had been at war with the french for many years.