What was briefly declared unconstitutional in the 1970s after the Supreme Court held that it was being imposed in an arbitrary manner?

What was the basis for the Supreme Court's decision in Plessy v. Ferguson (1896) that upheld the constitutionality of a state law requiring segregated railroad facilities?

a. Former slaves are not entitled to full citizenship rights because they did not immigrate to the United States willingly. b. Former slaves are not entitled to full citizenship rights because they were considered property under the law. c. The Constitution does not prohibit segregation; it only mandates equal protection under the law. d. Railroad transportation involves interstate commerce, which is regulated by Congress; there is no provision in federal law that prohibits segregation. e. Each state has the right to interpret the Constitution as it sees fit, as long as the interpretation is "reasonable and without malice."

Positivist approaches to international relations rely heavily on the German concept of verstehen (deep understanding) in their analysis

Indicate whether this statement is true or false.