I think the most significant cause of World War one was the assassination of the Archduke Franz Ferdinand. The other causes of the war was Imperliasm, Militarism, Nationalism and Alliances that were formed.
People began to develop networks of urban settlements when the rise of agriculture and trade allowed people to have surplusfood and economic stability
Most farmers practiced subsistence farming!
The correct answer is: Many Americans were scared that their bank was going to fail.
According to President Roosevelt, Bank runs were caused by many American who were scared that their bank was going to fail. The people were scared that Roosevelt would abandon the gold standards thus leading the increased bank runs. Citizens lost confidence in the American banking system thus rushed to withdraw their savings before bank runs made their banks bankrupt.