A brief explanation of the origin of the term manifest destiny and the goal of expansionists.

This scene shows the similarities between the concept of manifest destiny in the United States and expansion in Rome. The Americans state that manifest destiny "can't be stopped," explaining one of the core beliefs of the ideal: that the United States has an irresistible destiny to expand across North America.

John discusses how people moved west and how it affected the Native Americans.

A grandson is asking his Abuelita about immigrating to the United States from Cuba. At first, Abuelita enjoys talking about her experiences but then becomes sorrowful.

While traveling by train to the American west, the mice sing a song about their hopes for a better life. Among their many aspirations, they hope for a life free of garbage, corrupt politicions, and freedom.