D. Bering station
Explanation:
Domestic Tranquility means that there is peace, and no fighting/issues going on where you are living. It can have two different meanings though. It could also mean peace between the different states of a country. :) Hope I helped! For further details, I'd look into Google.
The answers are A.Cyrus allowed conquered peoples to keep their cultures. they would not take their religion or things like that and B.The Persian army defeated the Athenians at the Battle of Marathon. the Persians won them the first battle but lost the last battle. these two are correct the other ones are false they took ideas form other places .