- The yo-yo was originally used as a weapon for hunting the in the Philippines.
- Venetian blinds were invented in Japan.
- A deck of cards should be shuffled at least 7 times before playing.
- Scissors were most likely invented ancient Egypt.
- Swiss mathematician Leonhard Euler was probably the most influential mathematician of the 18th century, making discoveries in graph theory and introducing many modern mathematical words and notations among other things..
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