History of the United States I / Unit 9 USH1 1234 short lesson, about 20 seconds
Speed and Scale
Captions available
The idea
By eighteen forty the journey from Boston to Providence took half a day by train, against four days previously.
In practice
Thirty thousand miles of railroad track laid by the outbreak of the Civil War.
Where people slip
A day's travel had been a fixed human quantity for all of previous history. Within one generation it stopped being one.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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