They were mist likely following food sources.
The correct answer to this open question is the following.
Although there are no options attached we can comment on the following.
The developments in the information age which brought significant changes in the way you live your life today are basically the way people connect to each other using the internet, the way news is broadcasted in digital formats, the presence of mobile devices in our society, and the way people choose entertainment formats through these new technologies.
The internet had changed the life of humans on planet Earth. The fact that everybody is connected to everybody at any time, anywhere, with no restriction, is a major change.
This has been seen as a threat to governments because the internet is a way to communicate the truth and expose lies and corruption.
Another important thing is that this can of connection allows humans to know what is happening on the other side of the world, immediately. And we do not need formal news channels to inform us. People informing people is powerful. No more political bias.
"<span>The major petroleum strikes that began the rapid growth in petroleum exploration and speculation occurred in </span>Southeast Texas<span>, but soon reserves were found across Texas and wells were constructed in </span>North Texas<span>, </span>East Texas<span>, and the </span>Permian Basin<span> in </span>West Texas<span>. Although limited reserves of oil had been struck during the 19th century, the strike at </span>Spindletop<span> near Beaumont in 1901 gained national attention, spurring exploration and development that continued through the 1920s and beyond. Spindletop and the Joiner strike in East Texas, at the outset of the </span>Great Depression<span>, were the key strikes that launched this era of change in the state."</span>
The answer to the blank space given in the question is self-regulation.
Self-regulation in this context means that as individuals in a civil society, a person should follow standards accepted by a nongovernmental entity despite not having the threat of a punishment if she or he chose to not follow the rule. Since nongovernmental entities do not have the same power as a government, an individual’s self-regulation would determine whether a person would abide by the standards set or not.
