After a 1954 Supreme Court decision, to what two types of institutions did the equal protection clause of the Fourteenth Amendment apply? A. State governments and city governments B. Corporations and the military C. State governments and the federal government D. The federal government and corporations

C. State governments and the federal government<br /><br />The 1954 Supreme Court decision, Brown v. Board of Education, applied the equal protection clause of the Fourteenth Amendment to state governments, reinforcing that segregation in public schools was unconstitutional. The equal protection clause has been interpreted to apply to both state and federal governments.