Noun
The act of unsettling, or state of being unsettled; disturbance.
Source: Webster's dictionaryThe settlement of America had its origins in the unsettlement of Europe. America came into existence when the European was already so distant from the ancient ideas and ways of his birthplace that the whole span of the Atlantic did not widen the gulf. Lewis Mumford
The settlement of America had its origins in the unsettlement of Europe. Lewis Mumford