Answer:
One of the most significant advancements in military technology during the Civil War was from inventor and engineer John Ericsson, who created the designs for a new type of naval vessel for the United States: the ironclad ship with revolving turret.
Explanation:
Although it was unsuccessful, the Crusades introduced Europeans to the luxury of the Muslim civilization. When the Crusaders brought home silks, porcelain, spices and other goods, demand for these things in Europe began to grow, especially as the emerging bourgeois class of Europeans became a market for these luxury goods.
B the minor elite can maintain
