Roosevelt began addressing the american public directly over the radio in a series of talks, and these so- called " " went a long way towards restoring public confidence.

Fireside chats.

Explanation:

The United States President Franklin D. Roosevelt addressed the American public by a series of 30 speeches via radio while holding the office from 1933 to 1944 which are called fireside chats. Although the speeches were started to gain public support for his New Deal Policies, they eventually expanded to a variety of topics which include the problem of unemployment to fighting the fascist forces in Europe. He was the first political leader to understand the potential of radio communication and he used simple language so that maximum people could connect to his speeches.

they all focused on themes about the inevitability of death.