That is true my friend
I hope this helps
Wait it isn't 5! Just a second. It is -15
-4 times 5 is negative 20. When you add 5 to negative 20, it becomes -15
Answer:
The Yellow River's Contribution to the World
Gunpowder, the compass, paper making, and printing - all of these inventions not only promoted Chinese cultural development, but also spread to the rest of the world, making an important contribution to the development of humankind.
The first writing the Sumerians invented was Cuneiform