That we are in the midst of crisis is now well understood. Our nation is at war, against a far-reaching network of violence and hatred. Our economy is badly weakened, a consequence of greed and irresponsibility on the part of some, but also our collective failure to make hard choices and prepare the nation for a new age. Homes have been lost; jobs shed; businesses shuttered. Our health care is too costly; our schools fail too many; and each day brings further evidence that the ways we use energy strengthen our adversaries and threaten our planet. —Inaugural address, Barack Obama What builds the speaker's credibility?

President Obama's credibility is build as a speaker by promoting his aim of restoring back the broken hope and optimism of nation.

Explanation:

President Barack Obama gave hiss first inaugural speech on January 20, 2009. He became the forty-forth president of the United States.

In his First Inauguarl speech, he was able to build credibility as a speaker by developing what he purpose to do as a president. In the given excerpt, he shed light on his purpose, that he aims to restore back the hope and optimism of the nation back. He addresses that the nation is going through war, a war of violence and hatred. He goes on to say that this weakening of the nation is strengthening their enemy.

So, it is the promotion of President Obama's aim in his inaugural speech that builds his credibility as a speaker.

go to google if u want the answer