What were four social effects of the California gold rush ?

it was promoted one of the largest migrations in US history.

rapid ecomic growth, buildings of railroads churches Banks.

the expansion of manufacturing service industry.

during the gold Rush California became an economic powerhouse at the end of the century

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.