What is the middle part of the constitiuation?

The middle part of the U.S. Constitution primarily refers to the Articles, which outline the structure and powers of the government. There are seven articles, detailing the Legislative, Executive, and Judicial branches, as well as the relationships between states and the process for amending the Constitution. The Articles establish the framework for governance, including the powers granted to federal and state authorities. The Bill of Rights, consisting of the first ten amendments, follows these articles and guarantees individual liberties.