It is on Google give me a lot of points please
1.) find plants to eat that you recognized to not be poisonous such as ones that grew in your homeland as well as the new world (example: blueberries, not entirely sure of it's blueberries so you might want to fact check it, sorry)
2.) find running streams of fresh water to drink but also to catch fish to eat.
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.
What do you mean ???????/........?