Burj Khalifa is the tallest building in the world
The efficient and easy transportation of raw materials and finished goods was an important reason that railroad encouraged. At present, in the United States of America (USA), around 7000 railroads are active which carries the raw material and good to the different states and places of the country.
In the United States of America, on that date of 28th February, 1827, the Baltimore and Ohio railroads became the first railways for commercial transportation of passengers and goods.
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I dont know but good luck tho
