I believe it is D, to maintain balance of the free and slave states. But i am not positive. sorry for my grammar / punctuation.
Answer:
The answer is Federation.
Born in El Paso, Texas, on March 26, 1930, Sandra Day O'Connor<span> was elected to two terms in the Arizona state senate. In 1981, </span>Ronald Reagan<span> nominated her to the U.S. Supreme Court. She received unanimous Senate approval, and made history as the first woman justice to serve on the nation's highest court
This was not my answer I give that all to google</span>
It shows us that in the medical times the churches held most power as the people were very religious this is important because it emphasise the political control to be by a church not democracy???