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very first thanksgiving
The very first calculator ever used could be an abicus, an electronic calculator, or even your brain. The first calculator invented was the abacus.
on 1523
Mumps wasn't used as anything. Mumps is a disease, and was at first very lethal.
Scientific notation is used to compute very large or very small numbers.
Sometime in 1876.
sword
We do not know. There were no records when copper was used for the first time ABOUT 11,000 years ago. Copper was one of the very first metals used by man.
In the very late 1800s they were used in electric cars.
Hard
The guilloche pattern was first used in the 16th century. They generally began being used around 1540, and were very popular for a time.