The California Photo up top is really interesting, the giant lake in the Central Valley is Tulare Lake, once one of the largest freshwater lakes on Earth, irrigation diverted the water and dried the lake.
There are things in church history they don't want you to know. They try to "inoculate" (their word) people against the full truth by telling just a little of it. Then you think you know the whole story and don't investigate any further. Research the challenging parts of church history for yourself. LDS no more.