Though much of The Crown season 4 focuses on the turbulent relationship between Prince Charles and Princess Diana, an equally compelling push-and-pull emerges between Queen Elizabeth and Margaret Thatcher. The ideological tension between the queen and Britain's first female prime minister comes to a head in episode 8, "48:1," which sees Queen Elizabeth taking the uncharacteristic step of publicly rebuking Thatcher over her handling of apartheid in South Africa. Did this really happen? Read on for the true story.