It says in the text that millions or people had come from different parts of the country to go into Washington, D.C. to protest. So congregate means to gather around in a mass.
So the context clues would be “meet on the National Mall” “millions of people” “their voices heard”.
hope this helps
Answer: It explains what allowed him to split himself in two and why he can no longer continue to do so.
The correct answer for this question is "D. Oh how little seems the spanMeasured round the life of man." Among the following choices, the line in the excerpt from the poem "A Grain of Sand" by Frances Ellen Watkins Harper that indicates its subject is that Oh how little seems the spanMeasured round the life of man.
If only half arrives then the orchestra wouldnt be correct. For a sentence fragment, if you have half of a correct sentence and the other is incorrect... it doesnt work.