Answer: I would write something on the basis of "following the Constitution."
Explanation:
The Constitution lays down a foundation for each citizens' rights, and limits the government from infringing on these rights. It also keeps the government confined to what was said in the constitution, but allows We, the People to amend it. Our First Amendment freedoms allow us to express our opinions freely, no matter how crazy or extreme they might be; our Second Amendment allows us to form militias, and bear arms against any threat, foreign and domestic. It was designed not only to allow We, the People to defend ourselves from petty criminals, but allows us to defend ourselves and our freedoms from any tyrannical government that may arise in the States. The other Amendments in the Bill of Rights also keep the government from expanding, but it is all too complicated too explain here.
You didn't include the sentence that was meant to be shown but based on the connotation and definition of the word 'migrated', the answer is most likely relocated.
D. The Kansas-Nebraska Act states that slaves were only allowed in the states below a certain point. And that the number of slave states and free states must remain equal.