 While it is purported that approximately 30% of the Swahili vocabulary is derived from Arabic, Persian, Hindustani, Portuguese, and Malay with Arabic contributing a majority of the foreign loan words in the Swahili language, sources differ.It is also important to bear in mind that such sources carry strong colonial bias that would rather indicate the evolution of Kiswahili as a creole of sorts, a language completed with the coming of Arab conquest, rather than a language fully formed with a borrowing of words at the advent of trade and conquest along the coast.This assumption, questionably, further implied that the Arab invasion along the Eastern Coast of Africa was necessary to its formation as a language.