Where do people think the Franks have fled to? How do we know this? Why would this be a safe place for the Franks to have gone?
a) People think the Franks have fled to Switzerland because they have family there, as mentioned in their letters.
b) People think the Franks have fled to Sweden because it's a neutral country with a history of providing refuge to those in need.
c) People think the Franks have fled to Spain because it's a nearby country with lax border controls.
d) People think the Franks have fled to Poland because it's their country of origin and they may have connections there.