The more important someone's rank in society was, the bigger the obligations became and thus, the responsibility increased. Mesopotamia was a region between the two rivers Tigris and Euphrates where the swing of world's first civilization emerged. Various cultures occupied the region and were brought together solely by their customs and religion. Trade came in as the result of agriculture, it brought prosperity and urbanization. The rise of cities led to economic and political developments, one city being conquered by another until the establishment of the first Mesopotamian empire by Sargon that lasted about 150 years until outside powers such as the Hittites (who raided Babylon) gained control over some areas. During the Middle Bronze Age, the Assyrians conquered much of Mesopotamia and, with the rise of the Babylonian dynasty, trade was once again favoured and brought along warfare.

The Alexandrian Empire was favoured by a number of its king's dispositions: that his soldiers would marry women of "alien" culture, that the gods of other cultures would be respected, and so on. He encouraged commerce and learning along with every military conquer. He added Greece about 2.2 million square miles with his invasions and conquers.

One of the reasons Rome was able to emerge as a city of power is that its position, only a few miles off sea, foregrounded trade and enabled the assimilation of Greek's advanced civilization. The Roman Empire was a consequence of war with Octavian's (later Augustus) victory over Mark Antony. The Empire embodied elements of different cultures, from Greek to Jewish and Babylonian, as well as other eastern civilizations. Augustus innovated a basic administrative structure of the empire and controlled such issues as grain distribution and water supply.

The Han dynasty was founded by Liu Bang and lasted, with an interruption, about four centuries. It was again an act of conquest, with the former winning over Xiang Yu the Battle of Gaixia. New laws were reinforced, along with tax reductions and social reforms. Military actions were taken by other later Chinese emperors who sought to base the structure of the empire...

Their weaponry and occasionally, the climate changes which facilitated the food supply, thus the strength and the growth in number of the soldiers, favoured Khan's intentions. The Mongols also called for outside help, when needed, thus making no racial discriminations to reach their goals.
Technologies are usually the result of one another. Domestication of animals initially meant easier access to food supply, people having to care for animals rather than having to hunt for them. It brought a series of improvements to daily life and it meant dung for crops, garments for individuals. Accessories were forged of horns and bones, such as needles and arrows, fat was used to produce candles, and so on.

Domestication of animals eventually led to the development in agriculture and this was what influenced nomadic tribes to change their lifestyle into a more settled one, which is one of the most important impacts it had in history. Because of this, herding and planting gradually took over the haunting and people's focus started to be more and more orientated towards communities. It is one of the most important improvements in human history because so much of this has led to one another, where one is the urbanization and the other is the economic development.

Other dependent areas included the need to keep record of time, as agriculture was seasonal and so, calendars were included. Also, the food surplus favoured trade which in turn meant interaction with other cultures and other cultures meant other religions, art, languages.

Eventually, it all led to a shift in human behaviour and social integration. The rise of cities produced art and science, politics evolved and war became possible. Power started to govern over the cities and technologies started to improve the means to obtain it.