<span>From the sentence “The table broke.” The sentence that adds an adverb phrase is -- The table broke and fell. “And fell” is the adverbial phrase that does the work of an adverb. It answered the question how did the table break. </span>
the answer to your question is the civil rights movement caused the assassination of Dr.Martin Luther King Jr. However, you'd better try to write it yoursefl or rather check Prime Writing site whether they have a similar article on their blog.