How did the seven hills contribute to Rome's development?

A. They offered protection from enemies,

B. They helped unify Rome into one community

C. They provided rich farmland for growing crops

D. They had wood for constructing buildings and bridges,

THE ANSWER IS A

Step-by-step explanation:

In the text i listened and the plains are what provided rich soil for crops, the hills protected them from enemy attack and were a rather hard way to travel. due to this and making it easier instead of travelling over the sea, they made roads as well as bridges. If you do not think this is right you could tell me why, im all ears.

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9