Which legislation established a federal-state system for unemployment insurance?

The Social Security Act is the correct choice because it was enacted in 1935 and established a comprehensive social insurance program, which included provisions for unemployment insurance. This legislation created a federal-state partnership, allowing states to create their own unemployment insurance programs under federal guidelines. This collaboration was significant in providing financial assistance to workers who become unemployed through no fault of their own, thereby stabilizing the economy during times of high unemployment.

The Act laid the foundation for the social safety net in the United States, addressing various issues related to poverty and economic security, thereby promoting social welfare. The inclusion of unemployment insurance as part of the Social Security Act marked a pivotal moment in the development of labor rights and economic assistance programs in the nation.