Moses 7
The land here became barren for the Jaredites when they would not be righteous. The same thing happened at times for the Nephites. It may well be that the Middle East, which is also a promised land would be more fruitful if the people there were not so consumed with bitterness and enmity. Enoch saw that the land of Canaan became barren and unfruitful when the people were wicked. Interestingly Enoch did not preach to the people of Canaan. While the rest of the earth was steeped in sin the city of Enoch flourished and the Lord dwelt with them – could we see a time again where the righteous will gather and flourish while the wickedness rages around them among the children of men? Zion was upon the earth for at least 42 years after the death of Adam because it was upon the earth in the days of Enoch for 365 years and Adam only lived until Enoch was 388 and Enoch was not called by the time he was 23, let alone Enoch having time to build Zion by then.