Answer :
Final answer:
The limited knowledge of American rivers before Hudson's arrival in 1609 is supported by the lack of precise mapping, explorers' focus on natural harbors over rivers, and the unsuccessful settlements established along rivers.
Explanation:
Although some rivers were explored, none were precisely mapped. This sentence supports Hall's claim by indicating that there was limited knowledge about American rivers before Hudson arrived in 1609 because despite some exploration, there was a lack of detailed mapping.
Explorers were more interested in looking for natural harbors than in looking for rivers. This sentence further reinforces Hall's claim by showcasing that explorers prioritized other geographic features over rivers, demonstrating a lack of comprehensive knowledge about river systems.
Explorers started settlements along rivers, but they were later abandoned. This sentence implies that the limited knowledge of American rivers resulted in unsuccessful attempts to establish sustainable settlements, highlighting the challenges explorers faced due to their limited understanding of the rivers.
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