The battle of Stalingrad was the major turning point.
Anahuac is the name of the area the battle took place although i dont know the real name but judging by the way most battles are named i think it would be the battle of anahuac
Feudalism was successful because it allowed the control of land in exchange for service or labor.
The trans-continental railroad was completed around this time, so not only did train travel change, but was innovated so that a train could take you anywhere across the US.