Technological developments aside, what other major factor contributed to the expansion of the interest group system during the twentieth century?

Question

Quizplus · Accepted Answer

The expansion of interest groups during the twentieth century was largely due to the increasing size and scope of government. As the government became more involved in regulating various areas of society, more groups emerged to represent the perspectives and interests of those affected by these regulations. This led to a proliferation of interest groups across a wide range of issues and policy areas.

Technological Developments Aside, What Other Major Factor Contributed to the Expansion