The World Trade Organisation is an inter-government organisation which regulates international Trade. The WTO officially commenced on 1 January 1995 under the Marrakesh Agreement Signed by 123 Nations on April 15,1994, replacing the General Agreement on the Tariffs and Trade (GATT). Its headquarter is in Geneva, Switzerland and currently it has 164 member states of the world. Its official language is English, French and Spanish.