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.
- James Marshall, 1848. At a time when restless Americans were already itching to go west, the discovery of gold in California in 1848 was like gasoline on a fire. Within a year of its discovery, emigrants using the California Trail were flooding into the Sierra Nevada Range by the thousands. John Sutter was a Swiss immigrant who came to California in 1839 with a dream of building an agricultural empire.