Hey There!
Here is your answer:
The answer is option C "They were found in fertile river valleys".
Reason:
Each ancient civilizations built there civilization on fertile river valleys. They do this because if its not fertile land they cannot plant crops therefore they cant make any money, or they cant feed there family's, and most likely that civilization wouldn't last.
Also....
Its not option A because ancient civilizations weren't just placed in one certain area. There was some place in Egypt, others different places in China, etc... Its also not option B because some ancient civilizations believed in one God, others believed in many some believed in none. Its also not option D because they have huge trade routes all over the area. They do this in order to make more money to pay taxes, pay framers (workers).
Therefore the answer is option C.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
