After 1950, the naacp began to fight

to overturn segregation altogether in public schools.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.

the name of the theory is landmass theory.