Brigham teaches Zion is all of North and South America.
Brigham Young, Discourse, August 18, 1844, in Wilford Woodruff Journal, August 18, 1844, Wilford Woodruff Papers
Sunday I met I vast congregation of the Saints at the grove to hear a discourse from President Young upon the present excitement that is through Nauvoo in consequence of unwise teaching by some that are trying to draw away a party after them the following is a synopsis of the discourse
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I will give you the key. North and South America is Zion and as soon as the temple is done and you get your endowment you can go and build up statkes but dont be in haste, wait untill the Lord says go.