A brief overview of USAID and how they offer export opportunities for U.S. companies. This information is taken from "A Basic Guide to Exporting" provided by the U.S. Commercial Service to assist U.S. companies in exporting.
U.S. Agency for International Development (usaid.gov)

The U.S. Agency for International Development (USAID) administers programs that offer export opportunities for U.S. suppliers of professional technical assistance services and commodities. Opportunities to export commodities are available through the commodity import programs that USAID operates in select USAID recipient countries and through the agency’s direct procurement of commodities. In addition, USAID funds may be available in certain recipient countries to finance developmentally sound projects involving U.S. capital goods and services. For exporters traveling to developing countries in which a USAID program is in place, information is available on funds, projects under consideration, and contacts.