Final answer:
Roosevelt addressed his audience's feelings to establish an emotional connection and create trust. His speeches, known as 'fireside chats', helped him promote his New Deal agenda and expand the government's role.
Step-by-step explanation:
Roosevelt decided to start off by addressing how his audience felt, rather than simply telling them what he wanted to do, in order to establish an emotional connection with them. By speaking directly to the people and addressing them as equals, he was able to win over their hearts and create a sense of trust and rapport. His speeches, known as "fireside chats", allowed him to promote his New Deal agenda and expand both the government and the presidency beyond their traditional roles.