How many years has it been since 1981?

When was Wall Street first established? When was Charlemagne so great? Who invented the highway system? What was Virginia society like in the late 1600s? Which best describes how the east African slave trade changed after 1500? Where does the word cab come from? Why are goths a group? Why were the nobles important? What historical event happened in the 10th century? What century is 2013 ad? What is one reason the period from 1485 to 1625 is known as the Renaissance? How did the failure of the crusades lead to the discovery of America? Where does the idea of the code of chivalry come from? Europeans better than African? Did the middle ages began when the roman empire collapsed? How did ideology change 20th century? Who wears Masquerade mask in the Medieval Times? What was the significance of the crusaders marching around the walls of the city with bare feet? What nationality is the last name Mrdelja? What is the literary pieces that was the first to detail the greek pantheon?