Some northerners made money from southern cotton
and some owned slaves
<span>A Famous Author Helen Kendrick Johnson.</span>
Simply put, their actions have caused an increase in the amount of security in our country. The technology for public safety also has been greatly developed in the post cold war era. In terms of policies I would say there are more limitations/restrictions to things you can bring on a plane and things like that. Hope this helps...
Rome managed to overcome it's difficulties with having issues in it's leading structure and the highest chain in command; namely Roman generals at the time wanted glory for themselves which prevented them from beating Carthage for some period together with the fact that Carthage had the incredible general Hannibal. After they consolidated and joined forces together, they were able to beat Carthage after a campaign of war.