Ramba uchinyora ndima iyi - Ngarava dzinofamba negungwa inyanzvi yekare, zvichiita kuti kutengeserana kwakakura kwakadai sokutengeserana kwezvinonhuhwirira zvekare kubvire. Nokupinda kwevaMongol muJava
pfuti dzakatanga kushandiswa muhondo dzegungwa (semuenzaniso Cetbang naMajapahit) uye muzana ramakore rechi14 zvombo zvehondo zvegungwa zvaishandiswa muEurope, zvakanyorwa paHondo yeArnemuiden (1338). Zana remakore rechi15, pamwe chete nemasimba ekumaodzanyemba ekumaodzanyemba kweIndian Ocean, akadai semadzimambo eAustronesia, akaona kuwedzera kwekushandiswa kwezvikepe zvengarava (kusanganisira kutakura zvombo zvengarava) kubva kunzvimbo dzakakwirira dzekutengeserana, dzakadai seMing treasure voyages kana mabhizimisi eIberia yose nzira pamwe neAtlantic coast yeAfrica uye mhiri kweAtlantic Ocean, kutanga Age of Discovery.