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.
The "new immigrants" who immigrated to the United States after the Civil War primarily came from all of the following countries except "Poland", since the other three nations from the list were far more prominent.
