It was Carl O. Sauer who did
Monandas Gandhi
(you will need to add more background.) he stood for peace and caused others to be at peace around him
The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.