Fallout shelters are still someone in use but not for the purposes of nuclear fallout, only severe storms, etc. Th Interstate Highway System is the best choice from this list.
I believe A and C are correct.
Answer:They passed even stricter slave codes.
Explanation:How did southern states respond to slave rebellions? They passed even stricter slave codes. Define Underground Railroad. An organized, secret system set up to help enslaved people escape from the South to freedom in the North or Canada.
C..He conquered many European kingdoms and fought off invaders