What type of spending increased significantly prior to WWI that was

another cause of WWI?

Explanation:

Before World War I, the global economy was growing robustly. Technology, like steamships, the telegraph, and the telephone, expanded global travel and communication. 15  There were no limits on immigration and no need for passports. Governments were small and kept their budgets balanced.

the crusaders are identified in the painting;

c. by the red crosses on their backs