A similarity between the separation of power, the system of checks and balances, and federalism is that they are all structural features of the United States Constitution. They were designed to distribute power and prevent any one branch of government from becoming too powerful. Each of these features helps to ensure that the government operates within the bounds of the Constitution and that no one person or group can control the entire government. Additionally, they are all designed to protect individual rights and promote the common good. Overall, these features of the Constitution work together to create a system of government that is stable, effective, and accountable to the people.