It would be "Communist demonstrations" that did not <span>help cause World War I, since communism really did not start to play a prominent role in Europe until later in the century. </span>
During this era, human technology boomed. In this era, nomads have started farming. Nomads have stopped moving from one place to another. They have started forging metal tools. They also started pastoralism. They have communities and tribe. They were able to create a system on their own.
:His head stone reads "I know no north,no south, no east, no west"