Many Americans feel that the result of the 1824 election was fraudulent because no one received a majority of votes, the house of representatives chose a new president from among three candidates; Henry clay was not allowed on the ballot.
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.
The Great Migration, or the relocation of more than 6 million African Americans from the rural South to the cities of the North, Midwest and West from 1916 to 1970, had a huge impact on urban life in the United States.
Military or economic power.