Final answer:
The membership of the Supreme Court has historically been predominantly white, male, and Protestant. However, it has become more diverse over the years to include justices from various backgrounds.
Step-by-step explanation:
The membership of the Supreme Court historically has had a distinct characteristic: it was once a predominately white, male, Protestant institution. However, over the years, the composition of the Court has become much more diverse. As a result, the Court now includes justices from various racial, ethnic, religious, and gender backgrounds. This shift in the membership of the Supreme Court reflects the changing demographics and values of American society.