Butler technically didn't do anything, it was done by Truman and Bernard Baruch. The final solution is the name given to the order of a mass killing of all the Jews, exterminating by force through gas chambers or shootings, when all else failed they resulted to this.
The best option from the list would be that both sides "<span>attacked industrial regions to destroy the other side’s industry," since this was the first "total war" in which nothing was technically "off limits" for attack. </span>
I'm pretty sure it was the horse bc native americans no longer traveled on foot for long distances. instead, they had the ability to travel using horses which was faster and more efficient
1. The helped out eachother and had a meeting together talking about coal mining.
2. It grew in Oklahoma because its land have good sand oils/rich minerals.