The atmosphere helps us breathe,it provides a shield(radiation shield), a security blanket to keep us warm, and last but not least weathering the storms.
John Calhoun argued that the 1828 tariff helped the North at the expense of the South (c). This was the case because the tariff bolstered Northerner industrial markets but required Southerners to pay more for manufactured good.
The enslaved people in the Union during the Civil War fought in battle. These enslaved people often wanted to fight because the Union treated them better than the Confederacy.