What were the regular child workday hours before labor laws were put into place?
4 hours a day
8 hours a day
12 hours a day
16 hours a day

According to the Child Labour Wikipedia, Factory Acts were passed in 1802-1819 to regulate working hours for youth to 12 hours per day.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.