Yes i think i'm in middle school this is for high school
Answer:
Civil law I'm pretty sure, hope this helped :)
Due to trench warfare the machine gun caused stalemates because it was difficult to move up
Chinese americans moved west and also the Cherokee Indians back than where they were forced to move west then they got killed and that is why they call it the trail of tears because some who made it to the west and others who didn't, they call it the trail of tears because they still got killed either way.