
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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لغة الإنجليزية ● شكل PDF ● صفحات 32 ● ISBN 9781502610904 ● الناشر Cavendish Square Publishing, LLC ● نشرت 2015 ● للتحميل 3 مرات ● دقة EUR ● هوية شخصية 8672601 ● حماية النسخ Adobe DRM
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