A. Social security ___ government agency
B. U.S. Postal Service ___ government corporation
C. Boeing ___ government contractor
The United States Social Security Administration is a free organization or agency of the U.S. national government that manages Social Security.The United States Postal Service refers to an independent agency of the United States central government in charge of giving postal administration in the United States, including its separate zones and related states. Boeing refers to the world's largest aerospace company.