A revolution

A revolution (from Late Latin revolutio which means "a turn around") is a significant change that usually occurs in a relatively short period of time. Variously defined revolutions have been happening throughout human history. They vary in terms of numbers of their participants (revolutionaries), means employed by them, duration, motivating ideology and many other aspects. They may result in a socio-political change in the socio-political institutions, or a major change in a culture or economy. Scholarly debates about what is and what is not a revolution center around several issues. Early study of revolutions primarily analyzed events in European history from psychological perspective[citation needed], soon however new theories were offered using explanations for more global events and using works from other social sciences such as sociology and political sciences. Several generations of scholarly thought have generated many competing theories on revolutions, gradually increasing our understanding of this complex phenomenon.