Step 1: Understand the historical background.
The passage refers to South Africa during the period of apartheid, when strict racial discrimination existed against black people.
Step 2: Identify the restrictions faced by black people.
Black people were denied basic rights such as freedom, equality, and participation in political life. They were not allowed to live freely or work without restrictions.
Step 3: Link this situation to Mandela’s obligations.
Because of these discriminatory laws, Nelson Mandela had to dedicate his life to fighting for the freedom of his people. This struggle made it difficult for him to fulfil his responsibilities toward his family.
Step 4: Conclude the answer.
Thus, due to racial discrimination and apartheid policies in South Africa, it was almost impossible for a black man to fulfil both obligations simultaneously.