Misc: who starred as tv's "the rifleman"?

Questions

Birmingham is flanked by the M6 on the north and M5 on the west, which motorway flanks south & east?

How many senators comprise the US Senate?

In which North Italian city is a world renowned opera season held annually in the Roman arena during July and August?

Which motorway is, being developed as a ring motorway round Manchester?

Transylvania is in which present day country?