Human trafficking is the illegal trade of human beings for the purposes of reproductive slavery, commercial sexual exploitation, forced labor, or a modern-day form of slavery. The Protocol to Prevent, Suppress and Punish Trafficking in Persons, especially Women and Children (also referred to as the Trafficking Protocol) was adopted by the United Nations in Palermo, Italy in 2000, and is an international legal agreement attached to the United Nations Convention against Transnational Organized Crime. The Trafficking Protocol is one of three Protocols adopted to supplement the Convention.