Which of these is an example of a formal or informal presidential power?

Which of the following statements is true about germany's use of u-boats?

Which of the following allowed the government to stop a foreigner from becoming a citizen, presidential power to throw anyone he wanted out of the u. s. and that it was a crime to criticize the government? the alien and sedition act the xyz affair the 12th amendment marbury v madison

Which landmark supreme court case ruled that segregation by race in public education was unconstitutional? a. miranda v. arizona b. plessy v. ferguson c. brown v. board of education of topeka d. alexander v. holmes county board of education