Final answer:
Article I of the Constitution establishes the legislative branch, while Article II establishes the executive branch.
Step-by-step explanation:
Article I of the Constitution establishes the legislative branch, which is Congress. It outlines the structure of Congress, including the creation of two houses, the House of Representatives and the Senate. It also explains how laws are passed through both houses and require presidential approval or lack of veto.
Article II of the Constitution establishes the executive branch, which includes the president. This article outlines the powers and responsibilities of the president, including how they are elected through electors.