What is millennia?

Did rome fall because of Augustus's death? Why did the Roman coins decrease in value during the A.D 200s? Frankish leaders were part of the Carolingian Dynasty? Why did cowboys drive their cattle north from Texas along the Chisholm Trail? What strategy did the us use to help rebuild western Europe? What is a huckelbearer? When did the new millennium start? How was war on the western and eastern fronts different and how were they the same? What is wocnix? Who started the Mongol Empire? What are ancient inca's bodies of water? What is the difference between the roman republic and the greek democracy? Why was Domitian seen as a bad ruler? What was the final result of the widespread anti-chinese agitation in the west was? What century was 1432? What does the saying all roads lead to Rome mean? How many years from now and the 10th century? What is the label of the law forbidding a Patrician to marry a Plebeian? What does villien mean? What is one hundred years called?