In the 1850s the economy of the West Coast was greatly helped by the discovery of which of the following? Oil
Cotton
Tobacco
Minerals​

Why did john browns raid impact the national issue of slavery?

The stamp act: was passed by parliament in 1776 caused the boston massacre was the first direct tax levied by england on the colonists sparked protest in the colonies

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need