International economist Jim O’Neill explores the implications for the dollar of America’s response to the Covid-driven economic crisis. With help from economists and historians, he asks if China can challenge the dollar's dominant place in the global economy - or whether digital currencies, such as bitoin, could prove more disruptive in the long term?

(Photo: Representations of the Ripple, Bitcoin, Etherum and Litecoin virtual currencies on a PC motherboard. Credit: Reuters)