I want to know the answer to the following question:
What type of agreement was the 2001 Harkin-Engel Protocol?
All the background I'm provided with is that "In 2001, a voluntary agreement called the Harkin-Engel Protocol, was accepted by the international cocoa and chocolate industry to eliminate the worst forms of child labour, as defined by ILO's Convention 182, in West Africa.". Is that enough to answer the question?