The following sentence contains an adverb clause.
This sentence contains two clauses - an independent clause (We moved) and a dependent/subordinate clause (because our house was too small). Given that the second sentence gives us a reason why they moved, it acts as an adverb, which is why it is an adverbial clause.
Answer:
The statue of liberty ➡ symbol
Immigrant Americans ➡ Audience
Support the U.S. government by buying government foods ➡ message
Nostalgic and Patriotic ➡ mood and tone
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