Which article of the Constitution primarily deals with the Legislative branch?

The primary focus of Article I of the Constitution is on the Legislative branch. This branch is responsible for making laws and is divided into two chambers: the House of Representatives and the Senate. Article I outlines the structure, powers, and responsibilities of Congress, including how members are elected and the processes for passing legislation. It establishes essential functions such as taxation, regulation of commerce, and declarations of war, thereby explaining how the Legislative branch operates within the federal government.

In contrast, Article II pertains to the Executive branch, outlining the powers and duties of the President, while Article III focuses on the Judicial branch, detailing the organization and jurisdiction of the federal court system. Article IV describes the interactions and relationships between the states and the federal government. Each article serves a distinct purpose, making the identification of Article I as the one dealing with the Legislative branch clear.