| 11. | Soviet aircraft bombed Finnish vessels and harbours and dropped seaways.
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| 12. | This river also provides the basis of the commercial Saint Lawrence Seaway.
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| 13. | Shipping on the Saint Lawrence Seaway was superseded by trucking on highways.
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| 14. | Channel Seaway changed the course of the natural flow of the river.
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| 15. | Geologists call this shallow sea the Cretaceous Seaway or Western Interior Seaway.
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| 16. | Geologists call this shallow sea the Cretaceous Seaway or Western Interior Seaway.
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| 17. | The Isthmus of Panama closed the Seaway approximately 3 million years ago.
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| 18. | Several scenes were shot on Dark Island in the Saint Lawrence Seaway.
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| 19. | This fossil progression shows a record of flooding that created the seaway.
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| 20. | Barrier beaches and river deltas migrated eastward into the seaway.
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