A revolution (from the Latin revolutio, "a turnaround") is a fundamental change in power or organizational structures that takes place in a relatively short period of time. Aristotle described two types of political revolution:
Revolutions have occurred throughout human history and vary widely in terms of methods, duration, and motivating ideology. Their results include major changes in culture, economy, and socio-political institutions.
Scholarly debates about what does and does not constitute a revolution center around several issues. Early studies of revolutions primarily analyzed events in European history from a psychological perspective, but more modern examinations include global events and incorporate perspectives from several social sciences, including sociology and political science. Several generations of scholarly thought on revolutions have generated many competing theories and contributed much to the current understanding of this complex phenomenon.
Perhaps most often, the word 'revolution' is employed to denote a change in socio-political institutions. Jeff Goodwin gives two definitions of a revolution. A broad one, where revolution is "any and all instances in which a state or a political regime is overthrown and thereby transformed by a popular movement in an irregular, extraconstitutional and/or violent fashion"; and a narrow one, in which "revolutions entail not only mass mobilization and regime change, but also more or less rapid and fundamental social, economic and/or cultural change, during or soon after the struggle for state power." Jack Goldstone defines them as
an effort to transform the political institutions and the justifications for political authority in society, accompanied by formal or informal mass mobilization and noninstitutionalized actions that undermine authorities.
Political and socioeconomic revolutions have been studied in many social sciences, particularly sociology, political sciences and history. Among the leading scholars in that area have been or are Crane Brinton, Charles Brockett, Farideh Farhi, John Foran, John Mason Hart, Samuel Huntington, Jack Goldstone, Jeff Goodwin, Ted Roberts Gurr, Fred Halliday, Chalmers Johnson, Tim McDaniel, Barrington Moore, Jeffery Paige, Vilfredo Pareto, Terence Ranger, Eugen Rosenstock-Huessy, Theda Skocpol, James Scott, Eric Selbin, Charles Tilly, Ellen Kay Trimbringer, Carlos Vistas, John Walton, Timothy Wickham-Crowley and Eric Wolf.
Jack Goldstone differentiates four 'generations' of scholarly research dealing with revolutions. The scholars of the first generation such as Gustave Le Bon, Charles A. Ellwood or Pitirim Sorokin, were mainly descriptive in their approach, and their explanations of the phenomena of revolutions was usually related to social psychology, such as Le Bon's crowd psychology theory.
Second generation theorists sought to develop detailed theories of why and when revolutions arise, grounded in more complex social behavior theories. They can be divided into three major approaches: psychological, sociological and political.
The works of Ted R. Gurr, Ivo K. Feierbrand, Rosalind L. Feierbrand, James A. Geschwender, David C. Schwartz and Denton E. Morrison fall into the first category. They followed theories of cognitive psychology and frustration-aggression theory and saw the cause of revolution in the state of mind of the masses, and while they varied in their approach as to what exactly caused the people to revolt (e.g. modernization, recession or discrimination), they agreed that the primary cause for revolution was the widespread frustration with socio-political situation.
The second group, composed of academics such as Chalmers Johnson, Neil Smelser, Bob Jessop, Mark Hart, Edward A. Tiryakian, Mark Hagopian, followed in the footsteps of Talcott Parsons and the structural-functionalist theory in sociology; they saw society as a system in equilibrium between various resources, demands and subsystems (political, cultural, etc.). As in the psychological school, they differed in their definitions of what causes disequilibrium, but agreed that it is a state of a severe disequilibrium that is responsible for revolutions.
Finally, the third group, which included writers such as Charles Tilly, Samuel P. Huntington, Peter Ammann and Arthur L. Stinchcombe followed the path of political sciences and looked at pluralist theory and interest group conflict theory. Those theories see events as outcomes of a power struggle between competing interest groups. In such a model, revolution happen when two or more groups cannot come to terms within a normal decision making process traditional for a given political system, and simultaneously have enough resources to employ force in pursuing their goals.
The second generation theorists saw the development of the revolutions as a two-step process; first, some change results in the present situation being different from the past; second, the new situation creates an opportunity for a revolution to occur. In that situation, an event that in the past would not be sufficient to cause a revolution (ex. a war, a riot, a bad harvest), now is sufficient – however if authorities are aware of the danger, they can still prevent a revolution (through reform or repression).
Many such early studies of revolutions tended to concentrate on four classic cases--famous and uncontroversial examples that fit virtually all definitions of revolutions, like the Glorious Revolution (1688), the French Revolution (1789–1799), the Russian Revolution of 1917 and the Chinese Revolution (1927-1949). In his famous "The Anatomy of Revolution", however, the eminent Harvard historian, Crane Brinton, focused on the English Civil War, the American Revolution, the French Revolution, and the Russian Revolution. In time, scholars began to analyze hundreds of other events as revolutions (see list of revolutions and rebellions), and differences in definitions and approaches gave rise to new definitions and explanations. The theories of the second generation have been criticized for their limited geographical scope, difficulty in empirical verification, as well as that while they may explain some particular revolutions, they did not explain why revolutions did not occur in other societies in very similar situations.
The criticism of the second generation led to the rise of a third generation of theories, with writers such as Theda Skocpol, Barrington Moore, Jeffrey Paige and others expanding on the old Marxist class conflict approach, turning their attention to rural agrarian-state conflicts, state conflicts with autonomous elites and the impact of interstate economic and military competition on domestic political change. Particularly Skocpol's States and Social Revolutions became one of the most widely recognized works of the third generation; Skocpol defined revolution as "rapid, basic transformations of society's state and class structures...accompanied and in part carried through by class-based revolts from below", attributing revolutions to a conjunction of multiple conflicts involving state, elites and the lower classes.
From the late 1980s a new body of scholarly work began questioning the dominance of the third generation's theories. The old theories were also dealt a significant blow by new revolutionary events that could not be easily explain by them. The Iranian and Nicaraguan Revolutions of 1979, the 1986 People Power Revolution in the Philippines and the 1989 Autumn of Nations in Europe saw multi-class coalitions topple seemingly powerful regimes amidst popular demonstrations and mass strikes in nonviolent revolutions. Defining revolutions as mostly European violent state versus people and class struggles conflicts was no longer sufficient. The study of revolutions thus evolved in three directions. Firstly, some researchers were applying previous or updated structuralist theories of revolutions to events beyond the previously analyzed, mostly European conflicts. Secondly, scholars called for greater attention to conscious agency in the form of ideology and culture in shaping revolutionary mobilization and objectives. Third, analysts of both revolutions and social movements realized that those phenomena have much in common, and a new 'fourth generation' literature on contentious politics has developed that attempts to combine insights from the study of social movements and revolutions in hopes of understanding both phenomena.
While revolutions encompass events ranging from the relatively peaceful revolutions that overthrew communist regimes to the violent Islamic revolution in Afghanistan, they exclude coups d'états, civil wars, revolts and rebellions that make no effort to transform institutions or the justification for authority (such as Józef Piłsudski's May Coup of 1926 or the American Civil War), as well as peaceful transitions to democracy through institutional arrangements such as plebiscites and free elections, as in Spain after the death of Francisco Franco.
There are many different typologies of revolutions in social science and literature. For example, classical scholar Alexis de Tocqueville differentiated between 1) political revolutions 2) sudden and violent revolutions that seek not only to establish a new political system but to transform an entire society and 3) slow but sweeping transformations of the entire society that take several generations to bring about (ex. religion). One of several different Marxist typologies divides revolutions into pre-capitalist, early bourgeois, bourgeois, bourgeois-democratic, early proletarian, and socialist revolutions. Charles Tilly, a modern scholar of revolutions, differentiated between a coup, a top-down seizure of power, a civil war, a revolt and a "great revolution" (revolutions that transform economic and social structures as well as political institutions, such as the French Revolution of 1789, Russian Revolution of 1917, or Islamic revolution of Iran). Other types of revolution, created for other typologies, include the social revolutions; proletarian or communist revolutions inspired by the ideas of Marxism that aims to replace capitalism with communism); failed or abortive revolutions (revolutions that fail to secure power after temporary victories or large-scale mobilization) or violent vs. nonviolent revolutions.
The term revolution has also been used to denote great changes outside the political sphere. Such revolutions are usually recognized as having transformed in society, culture, philosophy and technology much more than political systems; they are often known as social revolutions. Some can be global, while others are limited to single countries. One of the classic examples of the usage of the word revolution in such context is the industrial revolution (note that such revolutions also fit the "slow revolution" definition of Tocqueville).
For a list of revolutions see: