19. What are the characteristics of a reliable source? 1) It can be easily found online by using a search engine and is widely read and used by many people.
2)It contains specific information discussing the author's background and can be found using a search engine.

3)It is well-known by many people and contains facts that seem to be accurate.
4)It has gone through a peer-review process and contains facts that can be verified by another source.
ANSWER ASAP

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.