Generally speaking, salutary neglect was "<span>c. a policy based on the premise that as long as the colonies remain lucrative, then they would be governed as little as possible," since this was implemented by the British over the American colonies. </span>
Rulers where able to sponsor artists and to encourage scholars.
Answer:
Few people changed American agriculture more than Cyrus McCormick. His invention, the McCormick 'Virginia' reaper, revolutionized farming by combining many steps involved in harvesting crops into one machine. McCormick's reaper could cut more wheat in a day than a half-dozen farmhands.