Financial frauds of the century.

The article discusses some of the most famous financial frauds in the 20th century. Topics discussed include the original Ponzi scheme in 1920 wherein Italian immigrant Charles Ponzi took the money of investors in the U.S. but could not pay them back, fraud related to the estate of Colonel Jacob Baker in Canada and the U.S. in the 1930s, and Ruja Ignatova's defrauding of investors around the world in 2017 in relation to her crypto company OneCoin.