The term colonialism may also be used to refer to an ideology or a set of beliefs used to legitimize or promote this system. Colonialism was often based on the ethnocentric belief that the morals and values of the colonizer were superior to those of the colonized- some observers link such beliefs to racism and pseudo-scintific theories dating from the 18th. to the 19th. centuries. In the western worl, this led to a form of proto-social Darwinism that placed white people at the top of the animal kingdom, naturally in charge of dominating non-European aboriginal populations.(From Wikipedia)
The discussion on colonialism, at this stage, is done in two ways ;
1. Types of Colonies,From about 750 B.C. the Greeks began 250 years of expansion , settling colonies in all directions. The other examples range from large empire like the Roman empire, the Arab Empire, the Mongol Empire, the Ottoman Empire.
The Roman Empire under Trajan in 117 A.D.
The expansion of the Arab Empire under the Umayyads
The Mongol empire and its successorkhanates
Conquest of the Ottoman empire
World map of Colonialismin 1800
the map of the world in 1900
World map of colonisation at the end of the Second
World War in 1945
World Colonisation in 1492-2008