Why were the crusades initiated?

Aclaim about history is most likely not valid if it has which of these characteristics?

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio river.

Wha industry did the refrigerated rail car impact the most