Misc: What is the key signature of E flat major?

Questions

what is ancient greek city on the shore of the bosporus; also, an alternative name for the?

when was the term middle age (medium aevum) first used?

who was late 5th century ad, anglo-saxon ruler who is credited with the foundation of the kingdom of the south saxons, or sussex?

what is the second largest continent in the world?

who won the 100-metre dash at the 1924 olympic games in paris?