<u> A. the right to a jury trial in civil matters that involve over $20</u>
The Seventh Amendment to the United States' Constitution, ratified on December 15, 1791, guaranteed a jury trial for civil cases in the federal courts that involve more than $20 (at that time, $20 was considered a lot of money). This way the law distinguished the cases that may be heard by a judge alone from the cases heard by a jury.
In general, a major result of more farms becoming mechanized was that "farm workers became rural entrepreneurs, although it should be noted that this was not universal.