Pedzisa mutsara unotevera: Shanduko yemamiriro ekunze yakava chinhu chakasimba pachirongwa chezvematongerwo enyika chepasi rose mukutanga kwema1990, nemisangano yeUnited Nations yeKushanduka Kwemamiriro ekunze yakagadzirirwa kumhanya gore rega rega. Zviitiko zvegore negore izvi zvinonziwo Misangano yeMapato (COPs). Misangano mikuru yeCOP yaive Chibvumirano cheKyoto muna 1997, Musangano weCopenhagen muna 2009 uye Musangano weNyika wa2015
Musangano weParis. Pakutanga Kyoto yaifungidzirwa kuva inovimbisa, asi pakuvamba kwama 2000 migumisiro yayo yakanga yave ichigumbura. Copenhagen yakaona kuedza kukuru kupfuura Kyoto nepakeji yakasimba zvikuru yezvipikirwa, asi yakanyatsokundikana. Paris yaifungidzirwa nevakawanda kuti yakabudirira, asi hazvizivikanwi kuti ichabatsira zvakadini pakuderedza kudziya kwepasi kwenguva refu.