and drilled, and taught that their country's greatness depended on its power of conquest and the size of its territory.
Then, too, a large number of wars were religious wars. Men feel very deeply about their own religion, and in the Middle Ages they were always ready to fight others who did not share their particular belief. The Crusades were by way of being religious wars, but they were more an opportunity for great fighters to go out and distinguish themselves on the battlefield. Civilized people do not fight about religion now, but there is no subject that makes them quarrel and dispute more violently.
When kings were no longer able to drive their people to fight just to satisfy their personal ambition, and when people became more tolerant about religious differences, other causes for wars arose. Governments became ambitious and wanted their countries to expand and acquire great colonial possessions, and acute rivalry grew up between nations. This was encouraged by the richer classes, who could profit by extended trade, and as the means of communication and of conveyance suddenly became much easier because of steamships, trains, and telegraphy, the desire as well as the possibility of building great Empires was very much increased. The governing classes and those who were rich and idle were not very much concerned about the pressing need for social reform which the vast mass of the people were longing for. They were
