What union was Tunisia part of?

Tunisia was part of the Arab Maghreb Union (UMA), which was established in 1989 to promote economic integration and political cooperation among the five North African countries: Algeria, Libya, Mauritania, Morocco, and Tunisia. However, the union has faced significant challenges and has largely been inactive due to political differences and regional tensions. Despite its potential, the UMA has struggled to achieve its goals of unity and collaboration among member states.