Why is it important for congress to make laws based on powers that are implied but not given?

How would lincoln's assassination change the direction of reconstruction? the radicals used this opportunity to take control of the plans. the south refused to cooperate with any plans after lincoln his death would put an end to all reconstruction plans. lincoln was too weak to carry out his plan and now it could be carried out.

Which landmark supreme court case ruled that segregation by race in public education was unconstitutional? a.miranda v. arizona b.plessy v. ferguson c.brown v. board of education of topeka d.alexander v. holmes county board of education

Was the battle of iwo jima over after us troops raised the flag on mt. suribachi?