Russia once saw the face of hell. Within the spirits of Satan. Everywhere he lurks, and Russia has been one of them.
<span>. Basically what it did was to decrease the number of peasants who were forced to work on the landed people's property for very low wages. After the plague, there was a build up in the middle class as the peasants, now in short supply, could bargain for higher wages so, in turn, prices of farm goods increased, but the peasants got more status.</span>
In an effort to deal with an increasing number of immigrants, in 1892 the U.S. government either banned or put limitations on many potential immigrants coming from Europe and Asia, especially China.
The positive effects of getting California is that it's closer to Asia, and California side of the nation at the time could have open territory to conquer.