Which describes a growing difference between the north and the south in the years after 1820?

The growing difference between the north and the south in the years after 1820 is that the north had more industrial economy than the south

After 1820, all of northern states has outlawed slavery and the north relied their production with technological advancement unlike the south who still relied on slaves

These islands/chinampas then provided rich soil for crops with easy access to water. i hope this is correct, im so sorry if its not !