A. Both the Obergefell v. Hodges (2015) and Brown v. Board of Education (1954) cases were central to the 14th Amendment of the U.S. Constitution. The 14th Amendment guarantees equal protection under the law to all citizens. In both cases, the plaintiffs argued that the state laws in question violated their constitutional rights to equal protection.
B. One major difference between the cases is the scope of the laws being challenged. The Brown case challenged segregation in public schools, while the Obergefell case challenged state bans on same-sex marriage. Additionally, the Brown case had a clearer historical precedent in the form of the Plessy v. Ferguson (1896) decision, which established the "separate but equal" doctrine. There was no such precedent for the issue of same-sex marriage.
C. The Brown decision was unanimous because the issue of segregation in public schools had a long history of being considered morally and ethically wrong, as well as being clearly discriminatory. The Obergefell decision was almost evenly split because the issue of same-sex marriage was a much more recent and controversial development in American society. There was a great deal of disagreement and lack of consensus on the issue, which is reflected in the split decision. Additionally, the interpretation of the 14th Amendment's guarantee of equal protection has been a contentious issue throughout American history, with some justices taking a more narrow view of the amendment and others taking a broader view. This difference in interpretation likely played a role in the split decision in the Obergefell case.