Why did many coal workers go on strike in pennsylvania in 1902?

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

What role did the sons of liberty have when the stamp act was passed

Who is the best protagonist of their respective series? a. asta b. boruto c. ichigo d. deku