Why was nelson Mandela expelled from the university of fort hare?

He was sent to boarding school and later to Fort Hare Missionary College. He was expelled from college for helping to organize a strike against the white colonial rule of the institution. He then became involved in other protests against the white colonial rule. In doing so he set out for personal and national liberation. He ran away from home to avoid an arranged marriage. Later, he graduated from the University of South Africa with a degree in law. He joined a law firm as an apprentice.