I want to know the answer to the following question:
Along with Libya, Morocco, Tunisia and Algeria, who was a founding member of the Arab Maghreb Union?
All the background I'm provided with is that "In 1989, Gaddafi was overjoyed by the foundation of the Arab Maghreb Union, uniting Libya in an economic pact with Mauritania, Morocco, Tunisia and Algeria, viewing it as beginnings of a new Pan-Arab union.". Is that enough to answer the question?