It is a strong form of diplomacy where a country negotiate while making it clear that the options and power of military might are left open. It is like by being bullied by big boys in the international arena. It comes at the backdrop of the realization that negotiating with a weak military is futile in the international arena. It is founded on the principles of realism.
To start Daniel Shay was a farmer and not rich, the wealthy were scared that farmers would kill or hurt them, or even try to take over the government. The rebellion was fairly violent. I learned this a few years ago sorry if some details are slightly dry. Hope this helps though!
