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.
It is nitrogen dioxide.
And the o should be capitalized
Answer:
Putting aside the very real human cost, war has also serious economic costs – loss of buildings, infrastructure, a decline in the working population, uncertainty, rise in debt and disruption to normal economic activity.
1. The king of Britain created unreasonable taxes
2. The colonist had to basically do whatever the king asked them to.. so they wanted to create their own government
