Final answer:
Without checks and balances, one branch of government could become too powerful, leading to tyranny and the erosion of democratic principles. The balance of power would be disrupted, resulting in increased potential for corruption and a less effective separation of powers.
Step-by-step explanation:
If we didn't have checks and balances, it's likely that one branch of government could become too powerful, leading to a form of tyranny or authoritarian rule.
Without the system of checks and balances, the separation of powers described by Montesquieu and implemented in the U.S.
Constitution would be ineffective, resulting in a potential breakdown of democratic principles and increased corruption.
For example, without the legislative branch's power to override a presidential veto, the president could stop any law they disagree with from being passed, regardless of its support in Congress.
Similarly, without the Senate's approval of presidential appointments, the executive could fill the judiciary with partisan judges, compromising the impartiality of the courts.
Moreover, judicial review is essential for maintaining the constitutionality of laws passed by Congress.
Overall, the system ensures that no single branch becomes dominant over the others, maintaining a balance of power that is fundamental to the function of a democratic government.