What is the role of federalism in our government according to the US Constitution?

What was herbert hoover and the food administration do in wwi?

Brainliesttt ! : ) -global military, political, and psychological responses to terrorism?

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.