Which factors contributed to the establishment of the northeast as a core area within the world economy?

The contributing factors are:

-The Erie Canal and railroads gave easy access to the resources of the interior (which allow a much faster product and resource allocation form one region to another)

- New European immigrants provided cheap labor for factories (which increase production efficiency)

- Northeastern cities had excellent locations for international trade

- Eastern cities had the nation's largest supply of capital which provided the money needed