The correct option is D
The crusaders were Christian soldiers, mainly from Western Europe, who participated in some of the crusades in the Middle Ages. The name derives from the custom of sewing or painting a cross on their clothes (hence the expression "take the cross", which indicated those people who left to participate in the crusades). The term "crusader" did not begin to be widely used until the fifteenth century, since previously these were considered as armed pilgrims.
Rivers often act as really effective and accessible trade routes, so the historian could use this map to analyse trade routes between Early River Valley Civilizations.
Hope this helps :))
Metalworkers: They made weapons and cups.
Architecture: Designed Temples.
Music: Brought joy to gods and people who liked music.
