If you mean the Westward expansion of the USA, it was the 'manifest destiny' argument - that nothing but good could come of new territories being governed according to these enlightened principles.
If you mean expansion of the Southern slave-empire, this meant freedom in the form of States' Rights (free to over-rule Federal Law), and belief in the Constitution as originally interpreted, with slaves classified as property, whose ownership was sacred.
The arguments used to justify and oppose secession
Declaration of Independence
expansionists used the term "manifest destiny" to justify what belief?
yes
The lack of physical strength.
To justify the expansion to the detriment of the native Americans.
Yes, Social Darwinist ideas were used to justify policies of imperial expansion by suggesting that it was natural for stronger nations to dominate weaker ones. This concept was applied to justify the acquisition of resources and territories through military conquest.
Asia and the Pacific
The Spanish-American war and US occupation of Cuba and the Phillipines, among other things.
Manifest Destiny, Indian Removal Acts, and the Homestead Act were all ideas and policies that justified westward expansion.
The arguments used to justify and oppose secession
The figurative language in the poem "The Freedom of the Moon" includes personification, metaphor, and symbolism. Personification is used to give human qualities to the moon, metaphor compares the moon to freedom, and symbolism represents the moon as a source of liberation and inspiration.
The term Manifest Destiny was first used to support westward expansion to the Pacific Ocean. Manifest Destiny was a popular concept in 19th century America.
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An example of propaganda during westward expansion was the promotion of the idea of manifest destiny, which declared it was America's destiny to expand across the continent. This idea was used to justify the displacement and mistreatment of Native American tribes, framing it as part of a larger noble mission.
The belief in Manifest Destiny was used to justify westward expansion of America's borders in the 1800s. Before that, Britain made treaties with Native American Indians to keep whites on the eastern side of the Appalachian Mountains. Brits in the 1600s believed they owned "shore to shore" but the British had no idea how vast the land was that is now known as the Continental US (or the lower 48 states).
Allowance id