Question

The greatest military barrier of the western world is
The Great Barrier Reef
The Great Wall of china
Hadrians wall
Hoover dam

Answers

GPT-4o mini
The greatest military barrier of the western world is often considered to be **Hadrian's Wall**. Built by the Romans in the 2nd century AD in what is now Northern England, Hadrian's Wall served as a defensive fortification marking the northern limit of the Roman Empire in Britain.

While the Great Wall of China is more renowned as a military barrier, it is located in the East and is primarily associated with Eastern civilization. The Great Barrier Reef and the Hoover Dam, while impressive in their own right, do not serve the purpose of military defense.

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