3) ExercBritannicus

3)So here we are in 1763, and I, Peter, have decided to start my Tour of the Past, with an amazing miles-long ancient stone Wall which roughly separates my own country England from Scotland. a) Which Emperor had this Wall built?; b) at that time they called the Scots north of this wall by a different name - what was it?
c) There is still a huge ruined Roman fort at a place now called "Chesters"... what did the Romans call this fort?
d) A large river runs by this fort - what is it called?
e) Did the Romans have cavalry stationed at this fort( just Yes / No answer)