 Ramba uchiverenga ndima ino - Mumakore 150 kubvira pakati pezana remakore rechi19, kureba kwevanhu munyika dzakabudirira kwawedzera neanosvika. Zvisinei, kuwedzera uku kunoratidzika kuva kwakaderera zvikuru. Pakati pezana ramakore rechi19, pakanga pane kutenderera pakureba, nenhambo dzokuwedzera nokuderedza; zvisinei, kunze kwokuderera kwakabatana nokuchinjira mukurima, kunzverwa kwemapfupa hakuratidzi misiano mikuru mukureba kubva mukushanduka kweNeolithicmukutanga kwema1800. 