He was the commander of the American Expeditionary Forces of
the US forces during world war one.
He was the only American in his lifetime to reach the rank
of the General of the Armies which is the highest possible rank in the Army of
United States.
He also served in several Indian campaigns in New Mexico and
he was also known to be Black Jack because he also served the 10th cavalry regiment which is a segregated African
American unit in the army.
Although the Crusades are popularly viewed as religiously inspired campaigns to recapture the Holy Land, students should recognize them as a result of the social and economic events in Europe between 1000 and 1200. Religious and secular leaders seeking to end the fighting among feudal lords seized upon the Crusades as a means of redirecting that aggression. Feudal knights who would not be inheriting their family properties eagerly enlisted in the Crusades as a way to win wealth or status. The idea of the pilgrimage was a powerful one, and the Crusades were basically armed pilgrimages to the Holy Land. The various Crusades ultimately failed. The sack of Constantinople was a fitting denouement to the whole concept. The interaction with the East brought to Europe not only Arabic translations of Greek texts, but also original Arabic and Iranian scientific and philosophical works.
I believe the answer is Transportation Innovations
