Is based on supply and demand. With little or no government control. Buyers and sellers are allowed to transact freely if on mutual price agreement without state interfering in the form of taxes, subsidies or regulation.
Aaron beck developed are Which Attempts to change not only destructive thoughts and beliefs, but the associated Behaviors as well
Answer: Eleven is the answer you are looking for. Hope this helps :)
Explanation: Constantinople endured for more than 1,100 years as the Byzantine capital in large part due to the protective wall completed under Theodosius II in 413. Expanding the city perimeter west from Constantine's wall by approximately a mile, the new one stretched 3-1/2 miles from the Sea of Marmara to the Golden Horn.