So we could become allies
The colonies advertised the middle colonies in Europe to help attract more settlers.
People that moved to the middle colonies to escape any type of religious persecutions. <span />
1950s fashions emphasized fragile femininity, in the shape of soft shoulders, stiletto heels, wrist-length gloves and full, billowing skirts. Even working women's outfits hinted at fragility, with pencil-slim skirts and little hats with veil and feathers. I Couldn't find anything on literature, because it wasn't really a time known for its literature.
Answer:
It's large size, which made it difficult for the Union to conquer.