kurze Biografie über Nelson Mandela - so richtig?

    Hallo, für ein Referat soll ich eine kurze Biografie über Nelson Mandela schreiben. Ist das vom Aufbau, Grammatik und Inhalt so richtig? Danke im Vorraus :)

    Nelson Rolihlahla Mandela was born at Mvezo in South Africa on 18 July 1918. He worked as lawyer after he had studied law. He is one of the most great human rights activists. For his decades-long fight against Apartheid, because of he was 27 years long as political prisoner under arrest, he is admired by people all over the world. Caused by his staying power and fighting spirit he provoked political changes in South Africa. With his determination he motivated the people also to protest and stand up for their rights, so that the oppression of the black people in South Africa came to an end. From 1994 until 1999 he was accepted as the first democratically elected State President of South Africa and respected as an idol. His actions was honored 1993 with the Nobel Peace Prize.

    Nelson Rolihlahla Mandela was born in Mvezo in South Africa on 18 July, 1918. He worked as a lawyer after he had studied law. He has been one of the most influential human rights activists.
    For his decade-long fight against Apartheid, which he was imprisoned for as a political prisoner for 27 years. He is admired by people all over the world. Because of his staying power and fighting spirit, he provoked political changes in South Africa. With his determination he motivated the people also to protest and stand up for their rights, so that the oppression of the black people in South Africa came to an end. From 1994 until 1999 he was elected as the first democratical State President of South Africa and admired as an idol. His actions were honoured in 1993 with the Nobel Peace Prize.