Final answer:
The executive, legislative, and judicial branches under the Constitution share power and responsibility, operating under the principle of separation of powers, with a system of checks and balances to prevent any one branch from becoming too powerful.
Step-by-step explanation:
Under the Constitution, the executive, legislative, and judicial branches share power and responsibility. This principle is known as the separation of powers, which is essential for ensuring that no single branch becomes too powerful. The Constitution clearly defines the roles of each branch: the Executive Branch, headed by the president, is responsible for implementing and executing laws; the Legislative Branch, or Congress, is tasked with creating laws; and the Judicial Branch, represented by the courts, has the duty of interpreting and enforcing laws. These branches interact with each other through a system of checks and balances. For example, while Congress has the power to draft legislation, the president must sign a bill before it becomes law. Likewise, the judiciary has the authority to interpret laws and their constitutionality through a process known as judicial review, which was established in the landmark Marbury v. Madison case.