The United States added Oregon because of the treaty signhed with spain the qonis treaty
The first sun dial 7day week calander and eragation. Hope this helps
1. it allowed the spreading of news through more than just radio
2. created jobs for millions of people everywhere who wanted to make a TV show
3.allowed people to watch politicians speak rather than reading about it or listening to it they could watch the event unfold for themselves.
Not only did it change the US it changed the world for years to come
