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The carruca was

Muhammad’s flight from Mecca to Medina in 622 is known as the

By the second half of the fourth century, German tribes, known as “federates,” were incorporated into the Roman army.

In 476, the boy emperor Romulus Augustulus was deposed by    

The Christian Messiah is 

Diocletian intended the tetrarchy to

One consequence of the new agriculture of the Early Middle Ages was

Justinian’s most important lasting contribution to Western civilization was his

The doctrine of Petrine supremacy

Between 1000 and 1300, the population of Europe tripled.