So that the government can watch what your doing
This was suspended during the Civil War to hold Confederate sympathizers without trial or a judge to agree that they were legally imprisoned.
Britain and France
I helped
Answer: it signaled the end of legalized racial segregation in the schools of the United States, overruling the "separate but equal" principle set forth in the 1896 Plessy v. Ferguson case.
Explanation: In this milestone decision, the Supreme Court ruled that separating children in public schools on the basis of race was unconstitutional.