Think: 1. What might our world look like today if the Muslims defeated the Franks and were able to rule
western Europe as a part of a Muslim empire?

More Islamic countries are present in Europe.

Explanation:

If the  Muslims defeated the Franks and rest of the Europe and were able to rule  western Europe as a part of a Muslim empire so our world will be totally changed because there is no western Europe on the earth, they all converted into Islamic states. The Muslims have a very attractive culture and religion so first a lot of people will accept Islam and these countries are now Islamic countries due to more Muslim population.

the answer is c, all the other options are things they are known for.

hope this ☺️

number 1 is a)