A type of jurisdiction that state and local trial courts have is : LIMITED JURISDICTION. This jurisdiction can only hear the types of cases specified in the Constitution and federal statues (which is mainly federal crimes, cases rising under the federal law, cases with/against the U.S. government party, and cases involving 'diversity of citizenship."
They failed because nobody cared about the railroad. The railroad had to be a government project with leases to companies but the government was too much involved in the slavery issue that it didn't have time to deal with railroads. That's why railroads boomed after the civil war ended.
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I want to say #3 but I’m not 100% sure