Why are the Jews known to be good with money?

For a variety of historical reasons, Jews abandoned (or were forced to abandon) agriculture and increasingly became involved in commerce and trade from the Late Roman period (2nd-3rd centuries CE) onward. Over time, Jews became specialists in this field, accumulating hundreds of years of experience. Indeed, Jews were often invited to reside in kingdoms, especially Christian kingdoms, precisely because of their skill in trade and money-lending. Thus, handling money and commerce came to be seen as quintessentially “Jewish” trades.