What would happen if the aggressors were not stopped ?

If the aggressors were not stopped, they would soon to conquer their target area and spread their political power and influence upon it.

This would make the aggressors nations able to obtain the resources of the defeated, which make their military power become even stronger. So they need to be stopped as soon as possible before they become too troublesome too deal with.

we cant see it/

answer; european crusades;