The kingdom of Essex grew by the absorption of smaller subkingdoms or Saxon tribal groups. The kingdom is subdivided into three floristic subkingdoms and nine floristic regions. The Paleotropical kingdom is divided into three subkingdoms, which are each subdivided into floristic regions. In 1993, Cavalier-Smith divided the kingdom Protozoa into two subkingdoms and 18 phyla. In this article the floristic subkingdoms and regions are given as delineated by Takhtajan. Conflict soon erupted between these subkingdoms, and in 1882, Cetshwayo was allowed to visit England.