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.
California After the Gold Rush. By 1852 California, having voted against slavery, was a state, and the California gold rush was over.