Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Zuwa 1975, ƙasashe da yawa suna amfani da tsarin Jamusanci wanda aka kafa shi azaman daidaitaccen ISO, da kuma tsarin takaddar hukuma ta Majalisar Dinkin Duniya. A shekara ta 1977, A4 ya zama tsarin wasika na yau da kullum a kasashe 88 cikin 148. A yau duk ƙasashe a duniya sun karɓi mizanin ban da Amurka da Kanada. A cikin Mexico, Costa Rica, Colombia, Venezuela, Chile, da Philippines, har yanzu ana amfani da tsarin wasikar Amurka, duk da karɓar ƙa'idar ISO a hukumance.  Tambaya: waɗanne ƙasashe ne ba su bi ƙa'idar ba?
Amurka da Kanada