<em><u>Answer:</u></em>
The underlined portion (since you have been influenced by the argument of "outsiders coming in") of this excerpt from King's "Letter from a Birmingham Jail" is an example of a <u>dependent clause.</u>
<em><u>Explanation:</u></em>
A dependent clause or subordinate clause is one that cannot stand alone as a complete sentence because it does not express a complete thought.
Dependent clauses works like adverbs, adjectives, or nouns in complex sentences.
Transport- transport can help our daily life become easier at the same it can help to the economic growth of the country.
Agriculture- Is where we get our source of food.
Economics- Addresses problems in the poverty.
Energy- Gives us sources that may help with our daily life.
Culture- other people have different culture depending on the environment they're in.
I think that it’s fitting. Pendulums can be used to tell time, so yeah