To basically make sure you've made your claim clear, and to re-instate your claim just one last time, and add any examples you've missed.
The best answer would be A. hope this helps
A nation's "sovereignty" allows it to exercise its political power and authority, since without sovereignty it is unlikely that the nation would be able to keep out outside powers and influence.
Radio in the united states was to provide knowledge or communication to the citizens of what was going on in the country/ world. They were like tv's now days everyone had one, they gave the news just like television without the images, just the verbiage. For example, during world war 2, FDR (Franklin d. Roosevelt ) had sit-downs known as fireside chats were he would address the American people on the radio about details of the war, he used these talks to keep up the support of the American people and give them some insight to what was going on.
