This is a big question. Civilization grows when you have a large population, a surplus of food, and a centralized government. The decline of civilization comes from warfare, repeated invasions, and disease.
Can you retype this in english please?
This is something you have to do on your own it is something you imagine not other people
The answer is -5
12*1/2=6
6+4= 10
10*-5=-50
-50/10 which is -5