The Great Depression most influenced the later civil rights movement by increasing political engagement among Black Americans.
During the Great Depression, economic hardships led many African Americans to seek assistance from the federal government, which prompted greater involvement in the political process. The New Deal programs, while not always equitable, provided some benefits to Black Americans and encouraged them to advocate for their rights and representation. This engagement laid the groundwork for a more organized civil rights movement in the following decades, as African Americans became increasingly aware of the need to fight for equality and justice.
While other options have some validity, the most significant and direct influence is the heightened political engagement.