What is henry wallace's main argument in his letter (written in 1946) assigned to president truman?

What was the main argument of plessy in plessy v. ferguson

Did the both the us and ussr have atomic weapons after 1949

Match each idea to the correct principle of government. federalism separation of powers checks and balances divides the powers of government into different branches arrowright divides the powers of government between central and state governments arrowright each branch of government has certain powers that prevents the abuse of power on the people arrowright