UnScramble this Word: r d r a a?

Questions

Where on the Iberian peninsular is the Trafalgar Graveyard?

What country is bounded in part by the Indian Ocean and Coral and Tasman seas?

What city does Prestwick Airport serve?

What Germanic race gave its name to acts of wanton destruction?

What do the Nidd, Wharfe, Aire, Calder and Don rivers all rise in?