How did total war affect soldiers and those on home front in ww1?

Both civilians and soldiers are targets/ European women were mobilized to work outside of the home to replace men who went off to war

Explanation:

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.