Throughout its existence, America has used many different technologies to help improve the country. In the 1800s, trains were developed and used for the first time. Eventually, they connected the East to the West. Discover what life was like on the first railroads in America, particularly for the engineers who ran them-what conditions they faced, what dangers occurred, and how railroads changed America forever.
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语言 英语 ● 格式 PDF ● 网页 32 ● ISBN 9781502610904 ● 出版者 Cavendish Square Publishing, LLC ● 发布时间 2015 ● 下载 3 时 ● 货币 EUR ● ID 8672601 ● 复制保护 Adobe DRM
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