Answer:
Marbury v. Madison: No judicial review, higher likelihood of increased power of a particular branch of gov't
Plessy v. Ferguson: No segregation
Brown v. Board of education of Topeka: Segregation would still be constitutional
<h2>"Expressed powers" or "enumerated powers."</h2>
Enumerated powers are those powers specifically granted to the federal government by the United States Constitution.
Enumerated powers include such things as the power to coin/print money, the power to establish and impose tariffs, and the power to regulated trade with foreign nations and trade/commerce between states.
Strict constructionists and loose constructionists differ over whether the government's powers should be limited to those specifically enumerated powers. Strict constructionists read the Constitution as giving the federal government only those specifically delegated powers. Loose constructionists argue that anything not specifically forbidden by the constitution can be within the window of what the government needs to do in adapting to the needs of time and circumstances.
It was one of the reasons the US joined the war. With that, the Germans and Central Power started to lose (they had no chances after the sinking and the Zimmermann telegram)