Final answer:
A keelboat is a riverboat used for transporting goods, towed or rowed, crucial for river transportation history.
Explanation:
A keelboat is a type of long, covered riverboat that typically has a keel and is used for transporting goods. These boats were rowed or towed and were crucial for transportation along rivers in the past.
Keelboats were sturdy vessels varying in size that could carry substantial amounts of cargo. They played a significant role in early transportation and trade, especially in river regions where other means of transport were limited.
These vessels required skilled rowers or sometimes were towed by other boats for propulsion, showcasing different methods of moving goods over waterways.
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