Because these men built some of the biggest industrial empires and pushed forward the industrialization of America.
1. Germany was forced to pay nearly half a trillion USD (in todays money) in reparations
2. Germany's Rhineland in the west was to be occupied by the allies so they couldn't invade France
3. Germany could only have a tiny military, with essentially no navy or air force
4. Germany needed to accept full responsibility for the war
5. Germany loses all of its colonies in Africa, Asia, and the pacific, and much of its valuable eastern land is given to Poland.
The Great Depression was a worldwide catastrophe because the economic recession spread around the world and impacted many people in a variety of ways. The deep recession in the United States in Europe increased unemployment and resulted in deep economic turmoil. This spread around the world leaving economies weaker, trade weaker, and social well-being worse off.
Isaac Newton is the answer, hope this helps
