B.) They were horrible and tragic
You could probably assume this - WWII was not a great event, and neither was D-Day
My guess would be so that you can recognize what feels right or wrong and treat others fairly.
King Duncan is a good king who lacks distrust of those around him. He is a generous man who wants the best for his kingdom. After he was told he would one day become king, General Macbeth desires to obtain the throne as soon as possible and murders the mild-mannered King Duncan.
Did you want for information.
