Answer : As the US expanded after the Revolutionary War, the Northwest Ordinance of 1787 helped organize the new territories and set up the steps each territory needed to take in order to become a state. It is interesting to note that the Northwest Ordinance outlawed slavery in the Northwest Territory.
Wind currents do carry radioactive materials, this is why America doesn't nuke countries like North Korea because of it's impact on allied countries such as Japan and South Korea,
