young, unmarried women from New England farms
they were also called lowell mill girls
Since during the Louisiana Purchase, we purchased so much land(technically the whole entire United States). Manifest destiny is our belief to spread from sea to shining sea so, we were motivated to expand to that new land we purchased. That would make the thirteen colonies less crowded and over populated.
One could argue that one similarity that Britain and the West Indies had with the New England colonies was that they all shared in the same "triangle trade", which brought large amounts of slaves to the Caribbean and large amounts of sugar and other products to Britain.
Most likely b a sense of national identity