Because of the climate and political and religious freedom.
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.
The United States experienced phenomenal economic growth. The war brought the return of prosperity, and in the postwar period the United States consolidated its position as the world's richest country.
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<u>The correct answer is: D. Contactless </u> Contactless is a chip-based technology that allows you to make a payment only by bringing the card or smart device (cell phone or watch) to a terminal. The plastics that have this technology have integrated a special antenna, which emits radio frequency signals called NFC to interact with the terminals and perform the transaction.