Final answer:
Count Henry of Champagne was a good choice as king of Jerusalem because he served as a Christian symbol in a predominantly Muslim area, had the potential to create peace and stability, and could forge strong alliances with other rulers.
Step-by-step explanation:
Count Henry of Champagne was considered a strong candidate for the kingship of Jerusalem due to several factors. He was a Christian king amidst a largely Muslim population, offering a symbol of Christian rulership in the region. This was important historically and symbolically for Christendom.
His rulership also brought the potential for peace and stability in a region fraught with religious conflict, as exemplified by the treaty which established a ten-year truce between Muslims and Christians, with Jerusalem remaining under Muslim control but open to Christian pilgrims. Additionally, the alliances Count Henry could potentially forge and the goodwill he could garner from various Christian and Muslim kings enhanced his profile as a diplomatic ruler who could navigate the complex politics of Outremer during the Crusades.