a: Great Britain

b: The personification of Great Britain (looks like Athena) (similar to Uncle Sam in the States)

c: One of the continents of the shattered world of Sosaria in the Ultima CRPGs It is the only world in Ultimas 3-7.1, 9 and Ultima Underworld, It shares 1-2 and Ultima Underworld 2 with other worlds/continents, 7.2 and 8 do not take place in Britannia at all. Britannia is ruled by Lord British who is actualy from Earth.
Britannia has eight major cities: Other towns and landmarks include: Several islands without towns sit off the coast. Eight dungeons hold evil monsters and provide a route to the underworld. All locations are as of Ultima 7, with aditional info from Ultima 9.