Answer:
Option: New England
Step-by-step explanation:
New England was the region which dominated cotton spinning in 1840. The cotton spinning arrived in the East in the cotton textile manufacturing industries. Samuel Slater established several successful cotton mills in New England. Before 1820, the cotton textile industry present in New England, Boston, Philadelphia based on hand spinning and weaving. In 1835, the Boston rose to a dominant position in cotton textile production.