Here are the answers to your questions:
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How does Iran differ from most of the region?
- It is mostly Shia Muslim.
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Which waterway is likely the most used for shipping oil from the region?
- The Persian Gulf.
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How much oil does Saudi Arabia export compared to other countries shown?
- It exports more than twice as much as the next biggest oil exporter.
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Which country has the greatest diversity of languages?
- India.
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What group has the largest share of trade with Turkey?
- The European Union.