Which feature is a characteristic of a market economy?

Martha entered into a contract with terry, an art dealer. according to the contract, terry was to supply 18 th century artifacts to martha for the play she was directing, and martha was ready to pay $50,000 for this. another director needed the same artifacts and was ready to pay $60,000. terry decided not to sell the artifacts to martha. in this case, the court may order terry to:

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

The biggest component / ingredient of summer time smog is