The concept of having shared understanding in public speaking is most closely related to common ground.
Common ground (also known as co-orientation) is an aspect of credibility to which the speaker's values, beliefs, and interests are shared with the audience.
He thought that people can build a Utopian society with socialist idealism
Known as Utopian socialism, it's the presentation of imaginary and futuristic ideal of society where there is no war, no hunger, and no crimes
This vision of this society was inspired by Karl Max social democratic movement, where the government basically tell the people what to do and the people don't have freedom to choose what they're gonna do for their career
The seed is the answer I believe.
It is when the Mission Statement of the US Department of State complies with USAID in investing in the shared security and prosperity.