The document summarizes the development of administrative law in the United States from 1776 to present. It discusses key milestones like the creation of agencies like the Interstate Commerce Commission in 1887 and expansion of agency power during the New Deal. It also covers the delegation doctrine, which allows Congress to delegate legislative powers to agencies, and important court cases like Panama Refining Co. v. Ryan and A.L.A. Schechter Poultry Corp. v. United States that struck down unlimited delegations that lacked standards. The principles of separation of powers and federalism are also discussed in relation to administrative agencies.