Release from control by the monarchy
Well, we discovered that we needed to upgrade security so that potential criminals weren't coming into our country, and so potentially harmful substances weren't being brought onto our planes. That meant literally anything that could become a bomb, start a fire, stab someone etc. As for Pearl Harbour, I think that had more of an affect on how we thought our military and defence system was working.
I think he wanted to be able to read and write
The Great Plains is the answer
You need to do your own homework getting answers is not the key