How many Millenniums have there been?

Did the barbarians cause the fall of rome? Why was medieval scaffolding built and then torn down after each beheading? What was the Renaissance the rebirth of which culture? Which dynasty controlled Indian sub-continent in 1600? What types of buildings were evident in medieval Europe and what were they used for? What was rich people called in the 1600? Spreading of ideas of a culture called what? What where the basic levels from most powerful to least under European feudalism? Why eastern philosophy had little influence on the western thought? What are three steps a young man would have to take to become a member of a guild during the middle ages? What century was 1745? What are the most important development in last 100 years? What century was 400 ad? What century were we in last year? What were the advantages of ruling the empire under mansabdari system? How many centuries is in 55bc to 1952? What is the origin of surname Kardashian? What do queens wear? What transformed the landscape of Western Europe and North America? What year were the crusades?

How many Millenniums have there been?