There were certain events during World War II that precipitated a change in the role of the federal government in the post-war era.
The changing role of the federal government in the post-war era was a result of a transformation in American liberalism. Liberalism resulted in the event of the American population changes that reshaped the economy. Before the war, the American citizens suffered from great economic depression which later translated during wartime. These issues were unprecedently responded to by the federal government. However, during the post-war period, there was a restoration of economic and unemployment issues.
At the beginning of the post-war era, the power, scope, and size of the US federal government surpassed its magnitude before the economic depression onset. The post-war US government was able to inherit the international power wielder, wartime command and the new deal that was able to ensure domestic financial management
The post War era also precipitated the changing role of the federal government after the event of the enactment of the 1946 Employment Act. In this case, there was a declaration that the Federal Government had a continuous responsibility and policy of ensuring that it uses all the possible practical methods to ensure the maximum promotion of purchasing power, unemployment, and production. Therefore, the Federal government had to undertake a permanent policy of providing the prevention of great economic depression, which was a macroeconomic malfunction.