Culloch v. maryland explain why the case is important to understanding the changing nature of american federalism.

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

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.