Answer:
Letter: A. (All citizens)
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
Roosevelt said that the US would prevent Latin American countries from illegal actions.
B. is the answer you will want to put. While they did let African Americans fight in the war in a special unit, they would not allow that unit to be led by an African American. It was headed by a white man named Robert Gould Shaw.