In 1883, who was responsible for creating the first system of time zones in the united states?
the federal government.
the railroad industry.
state governments.
labor unions.

In 1883, it was the "railroad industry" that was responsible for creating the first system of time zones in the United States, since the introduction of rail travel meant that there needed to be a set table of departure and arrival times across the US. 

It has the potential to lead to limits on rights by giving flexibility in making laws.