The essence of the revolution is that the revolutionary class overthrows the rule of the reactionary class, replaces the old social system with a new social system, and liberates the productive forces to promote social development.

It is clear that Roosevelt's New Deal freed the United States from the economic crisis and promoted the recovery and development of social productive forces, laying a solid foundation for the postwar economic prosperity of the United States.
But after all, Roosevelt's New Deal was a self-regulation and self-renewal within the bourgeoisie, so it was a reform movement that could not fundamentally change the essence of capitalist society, and a new social system could not be produced, so it was a limited revolution.
The root of the revolution lies in the sharpening of the basic contradictions of society. The basic contradiction of capitalist society is the contradiction between capitalist private ownership of the means of production and socialized large-scale production, and this contradiction runs through the process of capitalist development; the economic crisis of the Great Depression only makes this contradiction appear more real and materialized within a certain range; Roosevelt's New Deal is only this contradiction that changes from an explicit contradiction to an invisible contradiction as a whole.
But this contradiction will still erupt on a smaller scale and in a specific time period, and with the self-repair and improvement of the capitalist socio-economic mechanism, a new round of reform will inevitably come.
However, the bourgeoisie, due to the shackles of its narrow class concept, cannot allow liberalism to undergo deep and thorough reforms, so almost all reform movements of a bourgeois nature will be transformed into resistance movements under certain circumstances and within a certain range, so as an organic part of bourgeois reform, Roosevelt's New Deal is a limited revolution