Why was Congregationalism important?

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

Who's idea was it for businessmen to use their wealth for the greater good of society? (gospel of wealth ~ap u.s. history

This term refers to events that occurred during the great depression where panicked customers withdrew their deposits in fear that the banks were going to close and their investments would be lost. example: much of the great depression's economic damage was caused by nationwide