The world has an almost infinite number of different writing systems and corresponding regions. This ranges from East Asia, which is characterised by the Chinese, Japanese and Korean writing systems, to the Middle East, where the Cuneiform, Hebrew and Arabic writing systems have their origins, to Europe, where the Greek and Latin writing systems, among others, are used. These are of course only examples of writing systems, the list is much longer. Writing systems and the associated visual representations of numbers all have their own unique characteristics - while some are more symmetrical and angular, others are much more rounded and squiggly. The reading direction also differs. While some writing systems and numbers are read from left to right, others are read from right to left.
Just like cultures, writing systems change over time. Religion and science have an influence, but so do society and everyday language use. For example, the spelling used in Germany today contrasts greatly with the old German spelling.
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