It's worse than one can imagine. Short version...
1. Chinese immigrants, especially to the West Coast, came looking for the American dream and the gold rush.
2. Chinese immigrants were severely discriminated against and locked out of most jobs.
3. Chinese immigrants turned to running small family-owned businesses doing the work the White majority didn't want to do, e.g., sweating over boiling cauldrons and slinging wet, heavy laundry. IOW, a domestic service, which is often the lot of the immigrant. This is when the number of Chinese laundries exploded.
4. Once the White majority saw that laundries can be lucrative, they passed restrictive zoning laws forcing the Chinese out of their own laundry businesses they founded.
5. Like most of U.S.'s racist history, it was white-washed (forgive the double pun) into being just a thing that the Chinese have a knack for and they turned it into a thriving source of business for themselves.
So, Chinese laundries represent what the Chinese were forced to turn to in the face of racism, and then it was taken away from them. Tho, many kept moving their businesses to wherever they could, such that Chinese laundries stayed around in big cities for over a century.
Long story...
The origins of Chinese laundries in America are wreathed in racism and social exclusion.
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