I believe the answer is A) Centralized kingdoms is the correct answer.
Mainly Italians and Romans
I do not believe Scruffenbury Hill is a real place, as my instincts and google tells me. I could be wrong though. :/
Answer:it depends
Explanation: sustainability of what?
A country? A company?
As long as we maintain anything economically and or socially
To change the equation, you'd have to take the square root of both sides. When you do this, x^2 cancels out leaving you with x = sqrt(y)
If you need help on the other ones, all you have to do is solve for x by using either addition/subtraction or dividing/multiplying.