I believe it is B. Resolving the issues in court
Answer:
To gain wealth and to build a forts
Explanation:
Answer: Athens
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)