Hello!
The correct list is:
i. The Constitution was sent to the states to vote. ii. States voted on whether to approve the Constitution. iii. Nine of the thirteen original states had to approve it. iv. The Constitution became law.
The answer is 'the broad application of the Fourteenth Amendment to state policy'.
In 1837, the incorporation of the Bill of Rights into the Fourteenth Amendment had gain an opportunity but was rejected by the Court. After the Slaughterhouse Case, the Court decided to effectively short-circuited any future development of the privileges and immunities clause.