Why couldn't Rome Conquer Arabia?
13:26
Why did The Crusades Fail?
13:42
Why did the Umayyad Caliphate Collapse?
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Are Historians Wrong About the Origins of Islam?
13:59
Why Rome's Golden Age Ended? - The Turmoil Between 180-235 AD
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Why couldn't the Romans conquer Ireland?
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The Ancient City That Mastered Water
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What it takes to become a Roman General | Comparing Roman vs. Modern Officer Ranks
24:19