ABSTRACT
The earliest human beings lived a nomadic life, moving regularly from place to place in search of food and hunting and eating together in small groups. Since then, as the number of people on the planet has increased, the life of human beings has also become more complex. People developed new abilities, new skills, and new traditions. We learned to farm and to build shelter. We developed art, culture, and technology, as well as complex systems of government. Nations and races evolved, and the scale of both trade and warfare increased. And these changes continue at an even greater rate today as we continue to develop our world through globalization in communication, trade, and technology.
