Final answer:
The system that allows branches of government to prevent one another from wielding too much power is known as Checks and Balances. This system features the president's veto power and Congress's ability to override vetoes and impeach the president, thus ensuring a balance of power.
Step-by-step explanation:
The political system that allows one branch of government to veto or amend the acts of another to prevent one branch from having too much power is known as the system of Checks and Balances. This system is fundamental to the operation of a presidential system, where the legislative branch enacts laws, but the president has the authority to veto these laws, providing a check on legislative power. Conversely, the legislative branch can override a presidential veto with a supermajority vote, establishing a balance among the branches of government and ensuring that no single branch becomes autocratic.
Another key aspect of Checks and Balances is the ability of Congress to impeach the president, which is an important check on executive power. This dynamic interaction among the branches exemplifies cooperation and shared powers encouraged by the architects of the Constitution to impede the concentration of power and potential for corruption within a single branch or individual.