When Atticus went to Montgomery to read law, what tradition was broken?

The tradition of "living on the land" was broken.

Simon would have regarded with impotent fury the disturbance between the North and the South, as it left his descendants stripped of everything but their land, yet the tradition of living on the land remained unbroken until well into the twentieth century, when my father, Atticus Finch, went to Montgomery to read law, and his younger brother went to Boston to study medicine.