Answer: Brown Vs. Board of Education
Explanation: Plessy Vs. Ferguson allowed for discrimination based off of "seperate but equal". Brown vs. Board of education found that racial segregation of children in public schools was unconstitutional therefore overturning plessy vs. ferguson
The articles of confederation
To pass an amendment in Congress both the Senate and the House of representatives must have 2/3 vote to ratify. The amendment can also be ratified by constitutional convention in which the states vote, requiring 28 states to vote yes.
Idk if this is what you mean but i think they take cornell notes