In one scene, Naome says she has just given birth to a newborn child. However, in previous scenes, did she not appear to have a 'baby bump' at all. It's as if at least five or six months abruptly passed with no suggestion.
When the settlers are shown walking beside the wagon train (at around 46 mins) just before reaching Fort Hall, one is wearing a modern green and white horizontal striped shirt.
A paved road appears to run horizontally along the middle of the frame (at around 1 min) as the wagon train enters Fort Hall.