Answer:
d. Declaration of Independence; Constitutional Convention; Bill of Rights.
Step-by-step explanation:
The Declaration of Independence was approved on July 4, 1776 by the Continental Congress. The Constitutional Convention took place from May 25 to September 17, 1787. Finally, the Bill of Rights was ratified in 1791.
The Declaration of Independence was the document that allowed the country to become independent from England, and implement its own government. The Constitutional Convention took place afterwards, in an attempt to draft a constitution that could serve to guide the new country. Finally, as the limitations and shortcomings of the resulting constitution were recognized, the first ten amendments (known as the Bill of Rights) were added in order to complement it.