Correct answer choices are :
Calendar
Legal code
Number system
Writing
Wheel
Explanation:
The Sumerians were very creative people. It is assumed that they created the sailboat, the chariot, the wheel, the plow, and metallurgy. They developed cuneiform, the first written literature. They invented sports like checkers. They made cylinder seals that worked as a kind of testimony. They told stories about the first superhero and discovered many instruments and implements to help with construction and agriculture like slugs and ovens to bake blocks and ceramics. They invented and used a method of math based on the number 60.
