Original: More people died of ‘flu between 1918 and 1920 than had been killed in World War One, yet this episode in history lies largely untold.
Simplified: More people died of disease between 1918 and 1920 than were killed in World War 1, even though this time in history is still largely unknown.
Simplified: More people died of ‘flu between 1918 and 1920 than had been killed in World War One, yet this episode in history lies largely untold.
Simplified: More people died of ‘flu between 1918 and 1920 than had been killed in World War One, yet it is unknown to many.