What is an historical idea or event that supports douglas’s point of view (concerning states’ rights)?

Which two statements best shows the effects of the congress of vienna on eroupe

Who was the first explorer to sail all the way down the mississippi river

What was significant about the election of 1828 a. it was first to include b. it was first under new voting reforms c. it reintroduced the two party system d. it was decided by members of congress