Is there a price to pay when societies progress?

In which system of gonvernment would states function independently of each other?

Which of the following is a polynomial with roots 3,5i, and -5if(x)=x^3-3x^2+25x-75f(x)=x^3-3x^2+15x-25f(x)=x^3-15x^2+25x-75f(x)=x^3-3x^2+15x-75

What techniques do you use to come to a smooth stop? (driver's education)