A

"An interesting quote here."

The most drastic difference between WWII and WWI was that WWII engaged entire societies and implemented all available resources. Although the differences presented in answer choices B, C, and D are valid, they aren't as significant as the engaging of societies. The notion that WWI was not a global war is bluntly not true. Thus, A is the correct answer.

A) More than WWI, WWII was a conflict where entire societies engaged in warfare and mobilized every available material and human resource
B) WWI lasted for 4 years while WWII lasted for 6 years
C) WWII totaled between 50 million to 85 million fatalities while WWI totaled between 15 million and 20 million fatalities
D) Women were more actively involved in WWII than they were in WWI
E) WWII was a global war while WWI was not

What was the MOST drastic difference between WWI and WWII?