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.
Answer:
At first they help one another until they became enemies due to the colonies encroachment on their lands along with lands and cultural dispute
Explanation:
Well I think not b/c some of the debating people can be unfair if you think about it!!
