How did Jackson and Calhoun differ on the debate over states' rights?

What is true about the gullah who lived in areas of colonial south carolina and georgia?

Can someone answer these question about vasco de gama for me: when? (when did he started his travel)from where & to where? (from where he was and then where he went to)motives? (what was his motives for traveling)accomplishments & discoveries? i will give you 15 star for answering all of these, you so much.

Which subsystem includes the air we breathe