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Anonymous

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βˆ™ 4y ago
This answer is:
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Anonymous

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βˆ™ 3y ago
o yesΒ 
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Aiden Sousa

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βˆ™ 2y ago
whats the answer
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anonymous

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βˆ™ 2y ago
he built a school to teach navigation to sailors
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Paula Ferreira

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βˆ™ 1y ago
The astrotube

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Q: What did the duke of viseu do to ensure accurate navigation for portuguese ships?
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