What is the development of developed socialism connected with?

In order to continue the development of the internal political course, something more significant was required than the struggle against “subjectivism and voluntarism.” Thus, the concept of “developed socialism” was developed, which was to come after the implementation of all elements of communism in life. Nevertheless, this policy led to stagnation, especially in the case of economics. Since the life of people is less and less like life under developed socialism.