The Delian League (or Athenian League) was an alliance of Greek city-states led by Athens and formed in 478 BCE to liberate eastern Greek cities from Persian rule and as a defence to possible revenge attacks from Persia following the Greek victories at Marathon, Salamis, and Plataea in the early 5th century BCE. (from www.ancient.eu)
Sons of Liberty merchants started to boycot British goods. That has cut the American purchases from England by 50% effecting British merchants dramatically.
