While we overwhelmingly mark 31 October as simply the celebration of Halloween, we wanted to highlight some other events that have occurred on this day over the years. On this day One event that had an overwhelming and lasting impact took place on this day in 1517: Martin Luther posted on the door of Castle Church, Wittenberg, his 95 Theses. The ever-expanding United States admitted its 36th state on 31 October 1864: Nevada. One of the earliest transcontinental highways in …