What is the peace corps for?

The Congressional Act creating the Peace Corps states it's purpose is:

"To promote world peace and friendship through a Peace Corps, which shall make available to interested countries and areas men and women of the United States qualified for service abroad and willing to serve, under conditions of hardship if necessary, to help the peoples of such countries and areas in meeting their needs for trained manpower."

The stated mission of the Peace Corps includes providing technical assistance, helping people outside the United States to understand American culture, and helping Americans to understand the cultures of other countries. The work is generally related to social and economic development.