During the construction of the transcontinental railroad in the United States, <span>many new towns and settlements grew. So the answer is D. The railroad allowed people to travel to new territories in a fraction of the time it would take on horseback.
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1• The yellow River is located at China and also known as "Huang He."
2• Hadrian's Wall is located near the border between modern-day Scotland and England.
3• The Silk Road primarily refers to the land routes connecting East Asia and Southeast Asia with South Asia, Persia, the Arabian Peninsula, East Africa and Southern Europe.
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