Which event contributed to christianity becoming a unifying force in medieval europe?
a. the western schism united christians against the falxe pope in constantinople.
b. the black death led many christians to place even more faith in the catholic church.
c. the crusades united christians in a common cause against a foreign enemy
d. the hundred years war forced the christians to fight against invaders from the east

The Crusades united Christians in a common cause against a foreign enemy

Explanation:

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!