[5][6] According to one version of the two-stage theory, bourgeois revolution was asserted to be a necessary step in the move toward socialism, as codified by Georgi Plekhanov.
[11][12] Political sociologist Barrington Moore Jr. identified the bourgeois revolution as one of three routes from pre-industrial society to the modern world, in which a capitalist mode of production is combined with liberal democracy.
[13] Historian Neil Davidson believes that neither the establishment of democracy or the end of feudal relations are defining characteristics of bourgeois revolutions but instead supports Alex Callinicos' definition of bourgeois revolution as being those that establish "an independent center of capital accumulation".
[34][35] The first wave of bourgeois revolutions are those that occurred within the early modern period and were typically marked by being driven from below by the petty bourgeoisie against absolutist governments.
[6] The second wave of bourgeois revolutions are those that occurred within the late modern period and were typically marked by being led from above by the haute bourgeoisie.