 Nyorai kupfuurira kweiyi ndima - Mienzaniso inokosha yapakuvamba ine mativi maviri inobatanidza mepu yokuyerera kwaNapoleons March paMoscowrakagadzirwa naCharles Joseph Minard muna 1869; coxcombs rakashandiswa naFlorence Nightingale muna 1857 sorutivi rwomushandirapamwe wokunatsiridza migariro youtsanana muuto reBritain; uye mepu yemadontiti yakashandiswa naJohn Snow muna 1855 kufananidzira kupararira kwecholera muBroad Street. 