This section somewhat clarifies the principle of cultural adaptation as it might apply to North America or Australia: note the wording “especially in mission lands,” which seems to indicate that variations elsewhere are not out of the picture.
Provisions shall also be made, when revising the liturgical books, for legitimate variations and adaptations to different groups, regions, and peoples, especially in mission lands, provided that the substantial unity of the Roman rite is preserved; and this should be borne in mind when drawing up the rites and devising rubrics.
