Improvements made on something that has already been invented
The creation of big cities from the east coast to the west coast of the U.S.
Laying railroad track from the east coast to the west coast of the U.S.
The way a country makes money and the country's financial situation
The Transcontinental Railroad
The Civil War
Schooners and trestles
Not enough iron and steel to lay tracks and build engines
Natural disasters, weather, Indian attacks, running out of money, racial discrimination
Protests by Americans against building the railroads
The American Government tried to stop construction because it feared it would hurt the economy
It created a railroad all the way across the U.S. which made transporting large amounts of goods quicker, cheaper and improved the American economy
It cleared the Great Plains of Native American tribes allowing American people to move out west to build homes and towns
It began the American Civil War, which ended with a stronger Union and freedom for slaves in the Southern States
It allowed us to take over the territories of Alaska and Hawaii which became our 49th and 50th states in the U.S.