What type of federalism existed during the great depression and world war 2 when national and state governments collaborated on national policies?

During the Great Depression and World War II, cooperative federalism prevailed, characterized by a partnership between national and state governments in addressing economic and social challenges. This collaboration involved joint efforts in implementing New Deal programs and wartime policies, where resources and responsibilities were shared to achieve common goals. The federal government expanded its role, providing funding and guidance, while states played a crucial role in the execution of these initiatives, leading to a more intertwined relationship between the two levels of government.