Which of the following statements concerning the crusades is most accurate?
crusaders were most often younger sons or landless knights seeking opportunities to increase their social status through land.

the concept of crusade was limited to war carried out against the muslims.

crusaders rapidly adopted social and religious customs similar to those of the indigenous inhabitants of the crusader states.

the fourth crusade was the most glorious and triumphant for european monarchs.

the crusades continually carved out greater portions of the middle east, until most of the land as far as persia was under the control of western knights.