What does arpetheid mean?

"Arpetheid" appears to be a misspelling or a typographical error. If you meant "apartheid," it refers to the system of institutionalized racial segregation and discrimination that was implemented in South Africa from 1948 until the early 1990s. Apartheid enforced strict racial divisions across various aspects of life, including education, healthcare, and residence, and it was characterized by significant oppression of non-white populations. The term is often used to discuss issues of racial inequality and social justice.