Racism was the ideology of European, then the US and Japanese Colonisation; the framework of ideas that justified every act that subdued populations across the world. The ideas varied over time. In 1492, racism was mixed with Catholicism, by the Spanish invaders. By the time the Reformation and the Settlement of the Calvinists into America, racism was mixed with the new religion.

Many historians have detailed the long history of colonisation by the Irish in the Americas and later in India. In this blog, I summarise some of the key themes of the process of the colonisation of Ireland. If we are to understand colonisation in the Americas we must understand Britain’s first colony, that is, Ireland. Ireland has been unique in British history. Ireland has always been deeply foreign to the British despite her geographical closeness to the mainland of Britain.