What technological innovations contributed to the high death tolls during world war i?

Mustard Gas

Explanation:

Mustard gas is incredibly lethal and was used more in world war one than world war two that is a common misconception.

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.

c it has to be i googled it