Frequency is the number of waves that pass<span> a </span>given point<span> in a certain </span>amount<span> of </span>time<span>. The frequency and wavelength of a </span>wave<span> are related. When frequency increases more </span>wave<span> crests </span>pass<span> a fixed </span>point<span> each second. hope this helps!
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He is alluding to Lincoln's Emancipation Proclamation
Answer:
D. There are two different kinds of goals a person can make.
Explanation:
The statement that best expresses the central idea is C. It is better for communities to celebrate together.
<h3>What is a Central Idea?</h3>
This refers to the main idea of a text that an author wants to convey to his readers.
Hence, we can see that from the given text, there is the narration of the emancipation of the blacks as free men.
It also shows the various obstacles they faced and how they celebrated differently; blacks and whites, and how it was better for communities to celebrate together and uphold cultural history.
Read more about central ideas here:
brainly.com/question/2684713
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