Answer:
Here are the matches partner:
A building designed to express ideals of reason, moderation, symmetry, and balance; but in reality it mostly showed off wealth and power of Athens.
- The Parthenon
A group of enslaved people that the Spartans declared ritual war on at the beginning of each year.
- Helots
This confederation set up after the defeat of the Persians ended up becoming an instrument of Athenian imperialism.
- Delian League
A tactic used in Athens to remove leaders who had lost the people's confidence.
- Ostracism
So in summary:
- The Parthenon was a temple built in Athens that aimed for ideals of balance and harmony but mostly showcased Athenian power.
- Helots were the slave class of Spartan society.
- The Delian League started as a defensive alliance but became Athens' empire.
- Ostracism was a vote to exile influential Athenians for 10 years.
Hope this matches them up for you correctly, partner! Let me know if you need any clarification or have more questions.