He spread Buddhism throughout eastern Asia after he converted to Buddhism and gave up his warrior life. His name was Asoka.
Banks failed in the 1930's because when the stock market crashed in 1929, they had lost thousands of dollars. You see, the banks had invested their customer's money in the stock market and lost it all when it crashed. Then, people came looking for their money to pay off their own debt, but the banks couldn't because they themselves did not have any money. So banks often suffered because they were in debt.
Divine right of kings and rule of man are two concepts of the government that allowed dictators & monarchs to govern their people however they pleased. In most cases, these kings and dictators were very oppressive to the people living in the land meaning that they limited the rights and freedoms of the citizens. People began to question these systems. They questioned them because if leaders were chosen by God then they should do what is best for the people. A majority of rulers were Tyrants. They were not doing what was best for their people..so how could they be chosen by God? This led to a concept known as rule of law. People began to write the laws down so they were permanent & to make sure that the monarch or dictator followed the rules as well. It is a system that helps maintain the interests of citizens first & make sure leaders also follow the same rules as everybody else.