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Amphitheatre - Wikipedia
Amphitheatre | Architecture, History & Uses | Britannica
Amphitheatre - World History Encyclopedia
Colosseum | Definition, Characteristics, History, & Facts
10 Best Roman Amphitheatres to Visit in the World
Roman amphitheatre - Wikipedia
What is an amphitheater? | Britannica
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Theater and Amphitheater in the Roman World
Amphitheatre - Simple English Wikipedia, the free encyclopedia