Factual error: I understand that Mayans may have mined silver, but it seems rather funny that they would use European-style rails and iron ore wagons to haul the ore through the tunnels; as far as I know, it was all hand work for them. And the Spaniards, who could have introduced these techniques, would never have allowed the Mayans to create a silver statue, but would have swiped all the silver for themselves.
Continuity mistake: When Tohru arrives at the McDonald farm, he tosses his former Enforcer buddies into the water trough where Daolon Wong has been landed by Jackie: first Chow, then Finn, and lastly Ratso. But the threesome land in the trough in the following order: Finn, Chow, Ratso.