The grouping of modern people in Kenya is mainly pegged on three main ethnolinguistic groups (namely Cushitic, Nilotic and Bantu speakers). Over the years, however, this linguistic grouping has changed as a result of intermarriage and other groups of people have migrated into Kenya from other regions of the world.
It is believed that the hunter-gatherer communities might have been the kind hosts to the initial immigrants. Linguistic evidence links some of the basic words used by the hunter-gatherer groups with the dental click languages spoken in Southern Africa and Central Tanzania although there is no conclusive oral, archaeological or historical evidence to complement the linguistic evidence thus indicating some form of contacts between these groups of people and those with the dental clicks. One important aspect of the hunter-gatherer communities since the early times is the exchange within themselves and with their neighbors.
They exchanged for trade or gifts in order to have an internal and external good relationship. This ensured food security during the times of need and also helped in supplementing their forest products. These forms of exchange show that trade and interactions between people is an early practice and still continues to the present.