»Many Zions, or just one?«

When the One takes the 23 people, he goes to Zion. But does he go to the same Zion or does he build another one? How can 23 people build a city? If they are taken to the old Zion, they must know the truth, so there is no reason for Morpheus thinking that there has only been one savior.

There were 5 ones before neo.
I believe that zion is not the only last city. There are probably other human cities but not known of. The world is a big place.

Maybe that they think the city was built by previous rebels who didn't survive the war. Note that they have archives dating from before the Matrix, as seen in Second Renaissance. Wich means that they already were there...

Yeah, maybe that explain how the first one was freed. Maybe not all the humans died in the first war..
Man, you're good!

thematrixonlineboards.warnerbros.com...

There is only one Zion.

It was destroyed every time, except this one. They were able to control these people and quelch their rebellion so they no longer needed to destroy them.

Its important to point out that the Architect already says they destroyed Zion 5 times before. It should be obvious that all the records and information they have to go by are controlled by the machines, so to beleive any information they have is ridiculous. The war, the scorching of the sky, everything. Its all an illusion. There not even in the real world. Do you see any patched areas in Zion? Its been DESTROYED 5 times before but it does not look repaired at all, and the machines had to tunnel 4K straight down, again?