Answer:
It started between the year 4,000 BC and 2,000 BC, and lasted roughly 2,000 years.
I hope this helped you! :)
Answer:
back to Spain that's were they think it's safe
Answer:
Harriet Tubman played a role in helping the Civil Rights movement. She was responsible for moving over 200 slaves to the North through the Underground Railroads.
Railroads changed an developed the way Americans traveled across the United States.
Rail travel became safer and in less time. People from New England could travel to California in lesser time and in a little bit more comfortable and secure way.
Regarding commerce, transcontinental railroads created new opportunities for trade and opened new markets, reducing prices of transportation that took products to their final destiny in less time.
