The egyptians used hieroglyphics in the same way as the sumerians used ?

The  Egyptians used hieroglyphics in the same way as the Sumerians used cuneiform. Cuneiform means "wedge - shaped."  

Sumerian scribes  would use a stylus to imprint  or impress wedge shaped  marks in clay. The marks formed simple pictures or pictograms. For instance, a picture of the head of a person was read as the word "head". With time, The Sumerians improved this by adding sounds and meanings.

The writing was done on the clay tablets using a stylus made from a reed. The clay had to be soft and moist during writing, after which it was allowed to harden forming a permanent record.

the melanesian is basically practicing magic.

these civilizations were located around fertile rivers, where they could produce an abundance of crops