http://historymatters.gmu.edu/d/5154#:~:text=In%20an%20atmosphere%20of%20World,and%20resident%20aliens%20from%20Japan. This is the Link to FDR Executive Order 9066
Answer: The federal and state governments share powers, but federal has the majority.
Explanation: Federalism operates through institutions. It is a scheme of sharing political competences between government institutions at different levels of government.
The three rules known for unifying Japan are Oda Nobunaga, Toyotomi Hideyoshi, and Tokugawa Ieyasu.