What significance did the assassination of dr. martin luther king, jr. have on the united states?

The assassination of Dr. Martin Luther King Jr. had enormous effects all over the United States. While the civil rights movement was already enjoying significant success, the fact that this leader was assassinated was evidence of the need for protections and equal rights. This meant that more people were convinced of the message and decided to join the movement.

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

i believe the answer is d. it was not uncommon for people to faint or even convulse at these high-energy meetings.