Economic integration in East Africa has been discussed throughout the past 50 years or more, although—until recently—only in terms of Kenya, Tanzania, and Uganda. Almost as soon as Kenya and Uganda became established as political entities, close economic links were established between them, and when British administration was extended to Tanganyika after 1918 that country was brought into close relationship with its two northern neighbours. Thus a customs union between Kenya and Uganda was established in 1917, and Tanganyika was gradually incorporated within it between 1922 and 1927. The links were strengthened as economic development advanced, and were formalised under the East Africa High Commission from 1948 onwards: so they became an important part of the inheritance of the three states as they gained political independence in the years 1961–1963.1