Like the Maori and Moriori, the Hutus and the Tutsi likely originated from common ancestors—offshoots of the Bantu people. In fact, there was little delineation between the two at all before the arrival of Belgian and German imperialists. The Europeans divided the two groups mostly by economic status, with Tutsis being wealthier (the ownership of ten cattle being the base requirement). Indeed, if a Hutu came into money, he could change his status to that of a Tutsi. For many years, the Tutsi were the prevailing class in Rwanda, enforcing their rule in some cases with great violence against the Hutu people. But in the early 1990s a revolt began, which saw Hutus engaging in the wholesale slaughter of Tutsis. Hundreds of thousands were killed—the preferred method of execution being the machete, as ammunition was too expensive and difficult to come by. Rape, mutilation, and the deliberate spread of disease were also used as tools of terror. There are highly divergent accounts of the final body count, with some people claiming that there were five hundred thousand victims, and others that there were well over a million.