Complex sentence: The Court was established on the 21 January 1959 on the basis of Article 19 of the European Convention on Human Rights when eight signatories of the Convention acknowledged the jurisdiction of the Court.
Split into simpler sentences: The Court was established on the 21 January 1959 on the basis of Article 19 of the European Convention on Human Rights. On this day eight signatories of the Convention acknowledged the jurisdiction of the Court.