Explain simply why 1872 is the correct answer to: Passage: Established in 1872, the Cape of Good Hope SPCA (Society for the Prevention of Cruelty to Animals) in Cape Town is the founding society of the SPCA movement in South Africa and is the oldest animal welfare organisation in the country. A registered non-profit organisation and Public Benefit Organisation, the society is affiliated to the Royal Society for the Protection of Animals (RSPCA) and are Executive Members of the National Council of SPCAs South Africa (NSPCA), as well as a member of the World Animal Protection organization.

Question: Based on this passage, when was the spca established in south africa?. Explanation:
This is the relevant information: Established in 1872, the Cape of Good Hope SPCA (Society for the Prevention of Cruelty to Animals) in Cape Town is the founding society of the SPCA movement in South Africa and is the oldest animal welfare organisation in the country.