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French President François Mitterrand welcomes Queen Elizabeth II during the inauguration of the Channel Tunnel, on May 6, 1994, in Coquelles. AFP PHOTO JACQUES DEMARTHON (Photo by Jacques DEMARTHON / AFP) (Photo by JACQUES DEMARTHON/AFP via Getty Images)

French President François Mitterrand welcomes Queen Elizabeth II  during the inauguration of the Channel Tunnel, on May 6, 1994, in Coquelles. AFP PHOTO JACQUES DEMARTHON (Photo by Jacques DEMARTHON / AFP) (Photo by JACQUES DEMARTHON/AFP via Getty Images)