Hunting, extermination, as methodical and merciless as he knew himself capable of.
Formerly giraffes were found in large herds, but persecution has reduced their number and led to their extermination from many districts.
The most effective step would obviously be the extermination of the Anopheles mosquito.
The immediate result of European colonization was the enslavement and extermination of the Indians along the coast and in all those favoured inland localities where the whites came into contact with them.
Palpalis, although in South Africa there can be no question that the extermination of big game has been followed or accompanied by the disappearance of tsetse from many localities in which they formerly abounded.