Can a law challenged as unconstitutional be overridden?

1: how did the rise of rulers with total power in europe and asia lead to world war 2?

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a.slaves could not be citizens b.non-landowners could not be citizens c.blacks could not be citizens d.all persons born or naturalized in the united states vary differently in citizen status.

Explain one piece of evidence to show how the european system contribute to the growth of europeans in the indian ocean trade