What was the discovery that made Albert Einstein famous?   The most famous discovery he ever made: The Theory of Relativity which is E=mc squared   His most famous invention: i reely hav no freekin clue. i cant even find it â¦ on this site.
Charles Drayton Gibbes, A New Map of the Gold. Region in California, 1851, Harvard Map Collection. The great California gold rush began on January 24, 1848, when James W. Marshall discovered a gold nugget in the American River while constructing a sawmill for John Sutter, a Sacramento agriculturalist.n addition to massive emigration from the eastern US, the California gold rush triggered a global emigration of ambitious fortune-seekers from China, Germany, Chile, Mexico, Ireland, Turkey, and France.
Southern California's largest gold rush followed the discovery of rich placer deposits by William F. Holcomb and Ben Choteau on May 4, 1860. Miners rushed to the valley and established boom towns. Belleville, the largest, rivaled San Bernardino in population and almost became the county seat.