Which theme is best supported by the comparison in this passage from My Antonia?The daughters of Black Hawk merchants had a confident, unenquiring belief that they were “refined,” and that the country girls, who “worked out,” were not. The American farmers in our county were quite as hard-pressed as their neighbours from other countries. All alike had come to Nebraska with little capital and no knowledge of the soil they must subdue. All had borrowed money on their land. But no matter in what straits the Pennsylvanian or Virginian found himself, he would not let his daughters go out into service. Unless his girls could teach a country school, they sat at home in poverty.