Whether because of the Dorian invasions or natural catastrophes or a combination of these, the brilliant Mycenaean world and the reduced settlements that remained decayed and eventually lost their identity
Mycenaean Greeks and other Hellenic ethnic groups and tribes then living on the Greek peninsula were displaced by the newcomers and were driven south, east, and overseas to the Aegean islands and the Asia Minor coast in search of new locations in which to settle themselves
As the migrations were largely forced by hostilities, whatever economic and other benefits and developments had been enjoyed by these people in their former settlements had to be left behind, and a new beginning had to be forged elsewhere
Between the luminous heights reached by Mycenaean civilization in the twelfth century BC and the brilliant period of a much broader Greek world of the fifth century BC, there was a period of "dark ages"
While it did not flourish as it was to do beginning in the sixth century BC, it maintained its Greek culture and had continuous contact and trade with the newer eastern Greek cities, thus contributing to the preservation of the mother culture
Greek presence and influence had greatly expanded following a movement of peaceful colonization extending farther east along the Propontis (Sea of Marmara) and the Euxine (Black) Sea, as well as increasingly westward along southern Italy, Sicily, and on to the coasts of present-day France and Spain
It is at this time that we see the rise of monumental architecture used for public buildings that were also finely decorated, the plain but dignified Doric order appearing in the west and the Ionic (a mixture of Greek and eastern forms) appearing first on the island of Samos
Intellectual progress was made possible by the rise in literacy through the reintroduction of writing, Homer and Hesiod formalized the hierarchy of the gods in their written texts
The ritual of the Olympicgames began formally in 776 BC and was enacted every four years, during which time all Greeks put aside their differences and participated, in respect of religion and peace
All these and many other significant experiences together with independence, self-reliance, free thinking, and the economic growth of the settlers, soon led to a broadening of political awareness, power, and the evolution of the city-state, the basis of Greek democracy, the springboard to yet new growth
Settling down in an area of good water and agricultural potential, populations grew, and this growth eventually led to the development of concentrations of people
When governing the community became a full-time job, and especially when specialized functionaries were required to look after the particular needs of the people, a seat of government became a necessity
Building the center on a hill or high place (for visibility and security), it was called an akropolis (that of Athens being a well-known example), with the rest of the community built around its base
Only when the polis was large enough was it able to provide its citizens with services and administration, education, the arts, and many other benefits
The city-states of Athens, as well as Akragas and Syrakuse in Sicily, had over 100,000 people; Samos, Corinth, Korkyra, and Argos had between 60,000 and 100,000; and more than 20 other Greek cities around the Mediterranean had between 25,000 and 60,000
In those times a community was small enough so that the leading citizens all knew each other; as a result they were expected to participate in and perform their civic duties
Slavery was established at that time to create a labor force, as it provided household help as well as a means to wealth by providing manpower to work farms and mines and to labor at artisan crafts