What are the main components of the federal structure in U

What are the main components of the federal structure in U.S. government? Explain the separation of powers, checks and balances, and federalism. Use specific examples of each within your analysis and explain how they work. Evaluate the strengths and weaknesses of checks and balances and the relationship between the federal government and the states. Compare the federal, presidential U.S. system with the parliamentary system and the semi-presidential system. In what ways is federalism a better or worse system than more centralized states?