Answer:
the depression was caused by a number of serious weaknesses in the economy. ... The lingering effects of World War I (1914-1918) caused economic problems in many countries, as Europe struggled to pay war debts and reparations. These problems contributed to the crisis that began the Great Depression
Explanation:
Troops and supplies had to be sent long distances to the fronts.
Make bridges make defenses and dispose of active explosive devices
also fought as infentry men
High taxes, slave states vs non slave states, bad working conditions, bad pay,