How long did it take to build the Winslow house?

The role the railroads played in opening up the west? How was the treatment of slaves different in West Africa cultures than in the Atlantic slave trade? Why did Gorbachev pursue glasnost and perestroika reforms? What invention connected the west and east us? Why did so many people take part in the crusades? Why did armor and therefore knighthood represent a higher social class? Which battle secured the west for the union in the civil war? Why were ancient floor mosaics made from white marble? Who did most Westerners feel responsible for paying for internal improvement? What is the capital city of Western Rome? How did rome become a kingdom? Who invented evil? Why did the crusades make europeans willing and able to explore the new world? What affect did the Renaissance have on European exploration? What jobs did the peasants do in medieval times? When was Ad Beatissimi Apostolorum created? When is Vitis Bering date of birth? Why did religious division have such a dramatic political impact? How was humanism a change from Medieval Times? What is an argumentum ad crumenam?