Skocpol asserts that social revolutions are rapid and basic transformations of a society's state and class structures. She distinguishes this from mere rebellions, which involve a revolt of subordinate classes but may not create structural change, and from political revolutions that may change state structures but not social structures. What is unique about social revolutions, she argues, is that basic changes in social structure and political structure occur in a mutually reinforcing fashion and these changes occur through intense sociopolitical conflict. A convergence of peasant rebellion on one hand and international pressures causing state breakdown on the other hand cause revolutionary social movements.