Capitalism is a system where the owner keeps the profit from the workers job, in this case the profits go to the business owner and the worker gets a fixed payment for his work done.
Isolationism was a political current after WWI and during the great depression era, where the government of the United States avoided being involved in armed conflicts in the other continents, however in America they did protected their interests in south and central america, sending troops and support.
I feel like this is more of a question based on personal opinions but here is mine
Explanation:
I think that yes it was worth it because without that war many more Jews would have been killed and who knows what Hitler would have done next if he succeeded and killed all the Jews.