Which statement best explains why the the tenth amendment reserves some right and powers to the states

Before the civil war, the constitution protected slavery -true -false

What are some inventions during the han dynasty?

Which of these was one of the most important aspects of washington's presidency a. he did not consider how his actions would affect later presidents b. he came to believe that political parties would be good for the country. c. he insisted that congress make specific rules about the duties of the president d. he did not take advantage of the opportunity to keep the power the country offered him.