C~use of credit is the answer<span />
The radio talks that U.S. President Franklin D. Roosevelt were a very famous radio talk show. They were called Fireside Chats and they were used to talk to the American population about many things he was doing in order to aid them through the Great Depression.
i think the answer is the third one C.white male property owners ( i might be wrong)
Miller Reese Hutchison tried to make the first hearing aid.