What was not a widespread consequence of world war one

a) millions died from an influenza epidemic in 1918
b) thousands of young men were blinded due to poison gas in the trenches
c) there would not be another major war in europe for over 100 years

C) There would not be another major war in Europe for over 100 years.

Reason being is for starters, this statement is not true, World War 2 was in Europe, which was a very major war, and also, if the statement were true, it definitely would not be a consequence. Consequences are bad, so the lack of a war would not be a consequence.

Both countries had to aprove annexation.