Task: Text Categorization
Input (English): This man's conception occurred as a result of the "fun of the roads", a form of coitus interruptus gone wrong. He made use of the medical skills of Francis Fynn, and one source for his reign comes from Nathaniel Isaacs, who had been dispatched to search for shipwrecked men. The winner of a battle at Mome Gorge, he sheltered refugees from the Khumalo kingdom and fought numerous conflicts with Zwide, including the Battle of Gqokli Hill. He used his mother Nandi's death as the pretext for a political massacre, and started his career among the Mtethwa confederation. He started a movement called the Mfecane, or "crushing", which provided a model for the neighboring Ndelebe and Sotho peoples. The successor to Dingiswayo, his successor Dingane was crushed by the Voortrekkers at Blood River. For 10 points, name this ruler who pioneered the 'bull horns' and impi tactics and established the Zulu Empire.
Output (English): Science