Which choice best explains how FreshPaper affects the public? A Kavita's invention helps many people keep food fresh longer.

B Kavita runs a business based on her invention that keeps food fresh

C Kavita introduces her new invention to 35 other countries.

D Kavita receives a United States patent for her invention.

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.