Which of the following is a well-established regional human rights system?

The European system is a well-established regional human rights system recognized for its comprehensive framework and mechanisms to promote and protect human rights. Anchored by the European Convention on Human Rights, this system has a strong legal foundation and a robust enforcement mechanism through the European Court of Human Rights, which allows individuals to bring cases against states for violations of their rights. Additionally, the system has influenced global human rights norms and standards, highlighting its significance and effectiveness in addressing human rights issues.

In contrast, the other options—Asian, Oceanic, and Middle Eastern systems—do not have the same level of formal structure or enforcement mechanisms recognized internationally. While there are various human rights agreements and instruments in these regions, they often lack the comprehensive legal framework and established judiciary that characterize the European system. Thus, the European system stands out as the most developed and influential regional human rights regime.