Chiyambi cha Kupangidwa kwa pulawo ya Disc

Alimi akale ankagwiritsa ntchito nkhuni kapena makasu kukumba ndi kulima minda.Mafamuwo atakumbidwa, ankaponya mbewu m’nthaka kuti akolole zambiri.Kumayambirirodisc pulanianapangidwa ndi matabwa ooneka ngati Y, ndipo nthambi za m’munsizi zinali zojambulidwa m’mbali yosongoka.Nthambi ziwiri pamwambazi zinapangidwa kukhala zogwirira ziwiri.Khasu likamangirira chingwe n’kukokedwa ndi ng’ombe, mbali yosongokayo inkakumba dzenje lopapatiza m’nthaka.Alimi amatha kugwiritsa ntchito pulawo yoyendetsedwa ndi manja idapangidwa ku Egypt cha m'ma 970 BC.Pali chojambula chosavuta cha pulawo yamatabwa ya ng'ombe, yomwe ilibe kusintha pang'ono poyerekezera ndi gulu loyamba la pulawo lomwe linapangidwa kuyambira 3500 BC.

Kugwiritsa ntchito pulawo yoyambirira imeneyi m’malo owuma ndi amchenga ku Egypt ndi Kumadzulo kwa Asia kungathe kulima minda yonse, kuchulukitsa zokolola, ndi kuwonjezera chakudya kuti chikwaniritsidwe mokwanira ndi kuchuluka kwa anthu.Mizinda ya ku Egypt ndi Mesopotamiya ikukula kwambiri.

Pofika m'chaka cha 3000 BC, alimi anali atakweza zolimira zawo posandutsa mitu yawo yosongoka kukhala 'zolima' zosongoka zomwe zimatha kudula bwino m'nthaka, ndikuwonjezera' mbale yapansi 'yomwe imatha kukankhira dothi m'mbali ndikupendekera.

Mapulawo amatabwa a ng’ombe akugwiritsidwabe ntchito m’madera ambiri padziko lapansi, makamaka m’madera a mchenga wopepuka.Mapulawo oyambirira ankagwira ntchito bwino pa dothi lamchenga wopepuka kusiyana ndi dothi lonyowa komanso lolemera kumpoto kwa Ulaya.Alimi a ku Ulaya anayenera kudikirira makasu achitsulo olemera kwambiri omwe anayambika m'zaka za zana la 11 AD.

Maiko akale aulimi monga China ndi Perisiya anali ndi makasu akale amatabwa okokedwa ndi ng'ombe zaka zikwi zitatu kapena zinayi zapitazo, pomwe pulawo yaku Europe idakhazikitsidwa m'zaka za zana lachisanu ndi chitatu.Mu 1847, pulawo ya disc inali yovomerezeka ku United States.Mu 1896, anthu a ku Hungary anapanga pulawo yozungulira.Khasu ndi makina olima omwe amagwiritsidwa ntchito kwambiri padziko lonse lapansi.Pula ya chimbale imakhala ndi mphamvu zodula udzu, koma kuphimba kwake sikuli bwino ngati khasu.