The first civilizations that we have knowledge of developed in the valleys of major rivers: the Nile (Egypt), the Tigris and the Euphrates (Mesopotamia), the Yellow River (China) and the Indus River (India).
These civilizations developed in the valleys of rivers because this environment provided them with various vital resources. A constant and reliable source of water was needed for the development of agriculture, which allowed them to sustain large populations. Agriculture also flourished due to the fertile soil that tends to surround river valleys. The rivers also worked as a highway, allowing them to develop trade and facilitating the exchange of information.
Although the male citizen, with his full legal status, right to vote, hold public office, and own property, may well have dominated Greek Society, the social groups which made up the population of a typical Greek city-state or polis were remarkably diverse. Women, children, immigrants (both Greek and foreign), labourers, and slaves all had defined roles, but there was interaction (often illicit) between the classes and there was also some movement between social groups, particularly for second generation offspring and during times of stress such as wars.
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From 1914 to 1991, the world was focused on terror than peace. With the kick-off of WW 1 to WW 2. Then leading into the cold war, the Korean War, Vietnam War, to the wars in the middle east from the 1980s to the 1990s. Every nation wanted to be number one. From arms race to nuclear, China's industry rise, it opened many people to the true means of power. All of this can be characterized as a Microburst of the 20th century. Never to be forgotten.
This quote refers to the fact that the fall of the Roman Empire can not be linked to a single event, but rather relied on a number of cumulative events. For instance, many point to the invasion of Germanic Tribes from the North as causing the end of Rome. In reality, by that time Rome had undergone a series of internal and external crises such as Persian attacks in the East, civil upheaval surrounding the rise of Christianity, and the abuse of power by emperors and their followers. In the end, it was a little bit of all of these problems that contributed to the fall of Rome.
