5. which of the following situations was made possible by contributions of islamic civilizations?
a. studying algebraic equations in math.
b. practicing sword skills at fencing practice.
c. working with clay in art class.
d. writing in greek in foreign studies class.

(A) Studying algebraic equations in math.

This was made possible by contributions of Islamic civilizations

Explanation:

“Muslim scholars” contributed largely in the field of Mathematics in the golden age of Islamic civilization. “Arabic number system” is widely used even today.  

The first great achievement was introduction of ‘’Arabic numerals’’. It explains the "place-value" theory, which allows numbers to be expressed by “nine figures” and zero. This development made calculation very simple and also paved the way for the development of a completely new division of mathematics which is “algebra”. Even Arabic words entered Western vocabulary like “Al-JABR” became “Algebra”.

c.) the country needed a stronger central government.

north east because it has more forest