What was the main driver of the economy in the North during the Civil War?

Timeline: (fill in the blank) 1566- a __ settlement is established at santa elena. 1586- sir walter raleigh establishes __ the second attempt at an english colony in the new world. 1663- __ grants the region of carolina to the true and absolute lords proprietors of carolina. 1669- the __ of __ is written by john locke. 1670- the first permanent english settlement is made at __ or charles town. 1690s- some time in the 1690s __ is introduced to southern carolina and becomes a major cash crop. 1700- around 11,000 colonists now call __ carolina home. 1700- around 6,000 colonists now call __ carolina home. 1712- thelords proprietors commission a separate governor for __ carolina, even though the territories are still under one charter. 1715-the __ wars, marked by two years of hostilities between native americans and carolinians last from 1715-1717. 1719-the colonists of southern carolina overthrow the __ for both regions 1729- after the carolinas have become a crown colony. __ formally creates a south carolina and north carolina.

Don’t mind the already marked answer but taking it now

Why did metternich think nationalism threatened the austrian empire?