The Erie Canal was mocked as a big ditch when it was started, but by the time it was completed in 1825 it was called an engineering marvel. Readers learn how engineers overcame a rise in elevation of 568 feet between the Hudson River and Lake Erie with locks and aqueducts to create a waterway that changed America.
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语言 英语 ● 格式 PDF ● 网页 32 ● ISBN 9781502629630 ● 出版者 Cavendish Square Publishing, LLC ● 发布时间 2017 ● 下载 3 时 ● 货币 EUR ● ID 8672712 ● 复制保护 Adobe DRM
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