1. Internal conflict- is an argument or decision- making process within one character's mind.An internal conflict has a motive and its resolution is important to the development of the plot.
2. External Conflict-is a fight , argument, disagreement or simply opposition in which 2 sides are present. characters , themes, ideas, forces can all be in conflict.An external conflict is shown through actions (fight, argument, physical struggle), character traits (a good and a bad character), dialogues, descriptions - just about anything.  Identification of conflicts will lead you to theme. The resolution of the external conflict will advance the plot toward the climax and the end.
3. Three types of irony are:

• Verbal Irony- is the use of words to convey something other than the opposite of the literal meaning of the words.
• Socractic Irony- is when a person pretends to be ignorance of something or someone in order to expose the weakness of another's position,
• Tragic Irony- or dramatic irony is employed to heighten the suspense in a given situation.in the form of irony the words and actions of the characters be tray the real situation. the character speaking may realize the irony of his words while the rest of the actors may not.

In the book Brother Man irony is played out right through the novel.at the starting of the novel , Brother Man is the most loved and kind person in the novel and at the ending Brother Man is seen as a cruel heartless  criminal who committed a terrible crime who seemed harmless at the beginning .