| 21. | The significance of riverboats is dependent on the number of navigable rivers and containers.
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| 22. | Designed by the War Department, citing navigable river clearance concerns.
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| 23. | Andorra is a landlocked mountaneous country with no navigable rivers that doesn't have any navy.
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| 24. | Transportation was difficult due to the lack of rail lines or an easily navigable river.
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| 25. | Various attempts were made to extend the navigable rivers.
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| 26. | It is one of Michigan's few inland navigable rivers.
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| 27. | He saw what a great airport could do for a city with no navigable river.
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| 28. | It is a shallow, non-navigable river, although its mouth at Axmouth has some boating activity.
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| 29. | In 1831 Joseph Priestley wrote his' Historical Account of the Navigable Rivers, Canals and Railways'.
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| 30. | The navigable River Havel flows through the lake, entering it via a channel from the Schwedtsee.
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