What impact did the 1918 flu have on society?

 If we rely on the estimate of 50 million deaths published by Johnson and Mueller, it implies that the Spanish flu killed 2.7% of the world population. And if it was in fact higher – 100 million as these authors suggest – then the global death rate would have been 5.4%.

Explanation: hope this helps

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings

this is a good question! i'll do some research and come back when i have the answer!