-Literary tests for voting. This prevented African Americans from voting, as they were refused an education.
-Separate but equal doctrine. After the 14th amendment, this legal doctrine was implemented to “protect” the rights of African Americans. This meant African Americans were segregated by race, but “ostensibly ensured equal opportunity to all races”. This is where you’d see black water fountains, and white water fountains, or black Americans being forced to the back of the bus.
I maybe wrong but italians and germans was support.
if that do not help then google is your guy :)