Humans activities that effect sphere

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now

The north american colonies experienced a steady increase in population since the first settlement in jamestown in 1607. by 1775, the colonies' population was around 2,500,000, and most of the colonists lived east of the allegheny mountains. how did geography influence the settlement of america's first colonies?

Which statement about america is true it receives more annual rainfall than any other continent it is the smallest continent in the world it lies beneath an ice sheet that cover 98 percent of its surface