How many years has it been since 1981?

Who was the first person to use ce ll? Who invented the cowboy hat? How did Kublai Khan keep the Mongols from becoming absorbed into Chinese cultutre? What event has caused the Caucasus region to become so troubled since the 1990s is? Why is the name Stanislav sometimes shortend to Stas? How much land did the Mongols conquer? How did West African traditions spread to the Americas? Early Greek civilization were peace-loving and used the sea in many aspects of their culture? Who founded mass. bay? What were the 1500 and 1600's called? What did roman emperors eat? How do you get the Saxons faction in medieval total war 2? When was Knight Crusader created? How do you think abolisshing slavery would have affected Roman society? During what century did the Industrial Revolution begin? What was the open range and what brought about the end of the open range? What is the past perfect tense to stop? Where were the Christians trying to gain control of during the crusades? What did the Maya and Aztec civilization develop? What advantages did a Charter give to the people of a town in a middle ages?