Congo River mentioned in 1535. Abraham Ortelius in his world map of 1564 labeled as "Manicongo" the city at the mouth of the river. The tribal names in "Kongo" possibly derive from a word for a public gathering or tribal assembly. The modern name of the Kongo people or "Bakongo" was introduced in the early 20th century. The name "Zaire" is from a Portuguese adaptation of a Kikongo word, ("river"), a truncation of ("river swallowing rivers"). The river was known as "Zaire" during the 16th and 17th centuries; "Congo" seems to have replaced "Zaire" gradually in English usage during the 18th century,
Constitution of Zaire president as President of Zaire itself with total power over government and judiciary (Articles 28 and 30). Mobutism was declared the state ideology (Article 46) and all Zaireans were automatically made members of the MPR (Article 8). Mobutu himself was exempted from the restrictions on power mentioned in the document and given the power to unilaterally modify the document at will. The state of Zaire's legal system as established by the constitution led Marcel Lihau, a jurist and former president of the Supreme Court of Justice who had fled the country, to remark that "Mobutu is the constitution in Zaire".