Citigroup was once the largest bank in the US. Where does it rank among the top banks in the US and globally today? In what year does Citigroup history begin? What was its original name? What year did the bank change its name to Citibank? What some of the firsts that Citibank can take credit for? What was the reasoning for the merger between Citicorp and Travelers Group? Why was Citigroup the poster child for what could go wrong in a financial crisis? What are the two sources in which Citibank earns it revenue? What is the shift in Citibank strategy