Answer: over twenty-five million
<span>Historians need to be as accurate and honest </span>as possible in terms of telling the story of the
past. <span>
<span>Sifting through lots of information requires patience
so I would not pick impatience.
</span></span>
<span>While all humans have some bias, all the social
sciences as sciences strive to minimize bias. So I could not choose bias as a
character trait important for historians. </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.
