SUMERIANS!
what form of writing did the Sumerians invent
hieroglyphics
If you mean "invent" then it's cuneiform
Writing allowed the keeping of records, especially for collecting taxes. The Sumerians were the first people to have a form of writing, called cuneiform which is a type of wedge shaped writing.
Prehistory was when there was no writing; any period of history without information written down is called prehistory. The Egyptians were the first to use a form of writing: Hieroglyphics.
Cuneiform
Might be cuneiform.
The first commercially successful form of plastic, called Bakelite.
Because it was the first form of writing in Why_was_the_Sumerian_writing_system_so_significant.
Because it was the first form of writing in Human history.
Cuneiform
Because it is the first form of writing.