Which nation(s) invaded two countries in march 1938?

Ethnicity is used to distinguish between groups based on cultural elements, but according to the information presented in the lecture (blank) would encompass the details about a person like the shape of his or her features.

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?

Why did the athenians choose officials by lottery? would there be drawbacks to this method? explain.