I need some help guys

Which of the following was the center source of energy during the industrial a revolution

1. describe events that explain the border differences between these maps. use information from the maps and the lesson in your response. use complete sentences. 2.besides land, what did the united states gain from expansion? use information from the maps and the lesson in your response. use complete sentences. 3. people disagree whether the united states should have gone to war against mexico. should the united states have declared war? consider information from the lesson and maps to explain your claim with at least two reasons. the united states _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ because _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. a second reason is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. 4. reporter mcquill mentions your claim will be stronger if you respond well to someone who disagrees with you. use this framework to challenge a counterclaim. even though some people think that _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Why was it difficult fpr unions to succeed in the 1800s