The murder of Archduke Ferdinand the heir to the Austrian throne became the immediate cause of which war: A) World War I B) Battle of Borodino C) Battle of Jutland D) World War II Related MCQs: The murder of Archduke Ferdinand, the heir to Austrian throne, became the immediate cause of which war: The German attack on Poland was the immediate cause of? War of Independence of India started in: There is no heir …… the throne?