Among the slangs spoken in Congo, Indubil has been noted since around the 1960s, Mixed marriages between ethnic groups are common, particularly in urban areas where many different groups live side by side.
Europeans appear in small numbers throughout the country, as missionaries in the countryside, and as businessmen and traders in the cities.
Broadly speaking, there are four main population groups: The above descriptions are by necessity simplified.
Many Congolese are multilingual, and the language used depends on the context.
Like many African countries, the borders were drawn up by colonial powers, and bore little relation to the actual spread of ethno-linguistic groups.
There are 242 languages spoken in the country, with perhaps a similar number of ethnic groups.
Alfonso (the Kongo royal family had begun to take on Portuguese names), established relations with the Vatican.