There is actually a possibility that Trump will reappoint Yellen as Fed chair in spite of her being a Democrat. He may be looking for a way to be conciliatory to Democrats and earn himself some good press.
To re-enter the European Union the British government would lose its opt-out from the euro and have to adopt the Fiscal Compact. Both would be unwise and together would undermine progressive change in Britain.
This paper reviews a wide-ranging literature that examines the increased ability of leading firms to extract monopoly rents. It also reviews the more recent and still thin literature on the increase in inequality among workers with similar characteristics but different employers