The expansion of the rail networks led to a growth in the steel industry.
a growth in the textile industry.
a decline in the coal industry.
a decline in the meatpacking industry.

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated