What year was the underground railroad?

What is the relationship between the supreme court and the lower courts? the supreme court must abide by the decisions of the lower courts. the supreme court appoints judges to the lower courts. the supreme court can overrule decisions made by the lower courts the supreme court can impeach judges from the lower courts.

The byzantine empire weakened after asia minor

Brainliesttt !me : ) what was the result of indian independence?