Because of the unrestricted attacks German submarines were making on American ships
The Jet Stream hope it helps
Generally speaking, people who take a "layer cake" view of federalism believe that "<span>national and state governments must cooperate to meet citizen needs," since they believe that government works in "layers". </span>
<span>helped exploited Chicano workers with his successful "boycott grapes" movement that led to better pay, limits on the use of toxic fertilizers, and recognition of farm workers' collective bargaining right. I hope this helps.</span>
