Checks and balances is a system used in government to ensure that no single branch becomes too powerful. In many democracies, there are typically three branches: the executive, the legislative, and the judicial. Each branch has specific powers and responsibilities, and they can limit each other's actions. For example, the legislative branch can create laws, but the executive branch can veto them. This system promotes accountability and prevents abuse of power. If one branch oversteps its authority, the others can intervene. For instance, the judicial branch can review laws to ensure they comply with the constitution, safeguarding citizens' rights and maintaining balance within the government.