The airbib empire is the answe
California Gold Rush summary: As it brought about 300,000 people to California, the California Gold Rush was the largest mass migration in American history. It all began on January 24, 1848, when, at Sutter's Mill in Coloma, James W. Marshall discovered gold on his piece of land. The news about gold spread rapidly.
Because factories was the first time a establishment had been made that allowed people to labor inside, instead of outside in the unpredictable weather. This fact plus many others opened doors to modern day labor or work employment, which changed history.
You know that’s a very good question-
