Uganda, Kenya and Tanzania have agreed to implement on 1 January an agreement that is seen as key to boosting trade. The Common External Tarriffs (CET) will get rid of many cross-border barriers, regulate a common external tariff and help establish an integrated market.
It has been planned since the three signed a treaty re-establishing the East African Community (EAC) in 1999.
The original EAC collapsed in 1977 due to the war against Idi Amin in Uganda and economic and political differences.
Kenya, Uganda and Tanzania have a combined population of 90 million and gross domestic product of some $25bn.