Changes

In other cultures, abstract symbols were developed for verbs and for nouns not easily drawn. Such a culture is frequently said to write with hieroglyphs, although this word is generally not used for the Chinese system, although it fits this description.

In other cultures, abstract symbols were developed for verbs and for nouns not easily drawn. Such a culture is frequently said to write with hieroglyphs, although this word is generally not used for the Chinese system, although it fits this description.

Once a pictogram system developed to the point of being able to express all or most of the concepts which could be expressed through vocal language, it ceased to be a pictogram system and became a writing system.

Once a pictogram system developed to the point of being able to express all or most of the concepts which could be expressed through vocal language, it ceased to be a pictogram system and became a writing system.  If the pictrograms continue to represent concepts, then the writing system frequently becomes logographic.  If all the symbols represent individual sounds, then the writing system becomes alphabetic.

==Sumer==

==Sumer==