'About 3000 B.S. the Sumerians invented this writing system which used triangular marks'
cuneiform
HISTORY: About 3000 B.S. the Sumerians invented this writing system which used triangular marks
About 3000 B.S. the Sumerians invented this writing system which used triangular marks
About 3000 B.S. the Sumerians invented this writing system which used triangular marks
HISTORY
cuneiform
HISTORY