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Yes it was invented in the 1860s
No, the 1860s are in the 19th century.
Yes they ate salad in the 1860s.
The largest town in BC in the 1860s was Barkerville. It is stated that in the 1860s the population was 5,000 and it was designated the National Historic Site of Canada in the year 1924.
in the 1860s