Federalism is the separation of state and national government's powers. One of the reasons that the Civil War occurred was over the debate of state vs. national powers.
D)The ruling undermined the idea of free labor and supported slave labor" since it stated that slaves could not sue for their freedom in court, even if they were in free states.
Answer:
The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. ... Cold War calculations led to a divided Germany and U.S. involvement in wars in Korea and Vietnam
