Why were so many rails laid between 1870 and 1890?

he decade had its problems. It began with the financial Panic of 1873. Railroads were growing so fast that nearly 6,000 miles were being laid down every year (17,000 miles between 1871 and 1873). With so much new construction, lending was strained and overextended.

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  ‍♂️  < Here is a little picture to brighten your day up :>

i think the answer would happen to be the letter b

because the bar never runs out

couples always argue