Which contemporary global platform, established to unite Muslim-majority nations, has its headquarters located in Jeddah, Saudi Arabia?

Explanation

– The Organisation of Islamic Cooperation (OIC), established to unite Muslim-majority nations on shared international concerns, has its headquarters located in Jeddah, Saudi Arabia.
– This organization represents one of the largest international bodies globally, comprising a substantial number of member states across various continents.
– For exams, note that the OIC works on issues ranging from economic cooperation to advocacy on matters affecting Muslim communities worldwide.