In addition to transporting goods to markets, the other benefit of the growth of the railroads was they quickly eliminated the need for horse drawn wagons. The correct option among all the options that are given in the question is the third option or option "C". I hope the answer comes to your help.
The Sumerians are the earliest know inventors of The Wheel.
Maya observed the sky and calendars to predict solar and lunar eclipses, the cycles of the planet Venus, and the movements of the constellations.