30 November 1993: 1st Summit of East African Heads of State sign Agreement establishing the Permanent Tripartite Commission for East African Co-operation in Kampala, Uganda.
14 March 1996: Secretariat of the Commission for East African Co-operation launched in Arusha, Tanzania.
28 April 1997: EAC Member States sign Tripartite Agreement on Avoidance of Double Taxation.
29 April 1997: 2nd Summit of the East African Co-operation Heads of State is held in Arusha, Tanzania; 1st East African Co-operation Development Strategy (1997 – 2000), East African Flag and East African Passport launched; and Permanent Tripartite Commission mandated to embark on process of upgrading EAC Agreement into Treaty.
30 April 1998: 9th Meeting of the Permanent Tripartite Commission in Arusha launches a draft Treaty for Establishment of the East African Community; approves programme for its wide publicity; EAC Memorandum of Understanding on Co-operation in Defence signed in Arusha; Tripartite Agreement on Road Transport signed in Arusha; and Inland Waterway Transport Agreement signed in Arusha.
30 November 1999: 4th Summit held in Arusha at which Treaty for the Establishment of the East African Community is signed.
7 July 2000: Treaty for the Establishment of the East African Community enters into force; new regional organisation, the East African Community, comes into being.
15 January 2001: 1st Summit of the East African Community is held in Arusha; signs Protocols on: Rules of Procedure for the Summit of Heads of State; Rules of Procedure for the Admission of other countries to the East African Community; and formally launches the East African Community at the Sheikh Amri Abeid Stadium in Arusha.
30 November 2001: 3rd Summit of EAC held in Arusha; EAC Heads of State inaugurate East African Legislative Assembly and East African Court of Justice.
2 March 2004: EAC Summit signs Protocol for Establishment of the EAC Customs Union.
1 January 2005: EAC Customs Union becomes operational.
18 June 2007: The Republic of Rwanda and the Republic of Burundi accede to EAC Treaty.
1 July 2007: Rwanda and Burundi become full members of the EAC.
5 June 2007: Second Assembly (EALA) sworn in.
22 October 2008: First EAC-COMESA-SADC Tripartite Summit held in Kampala, Uganda. Discusses single Free Trade Area and merger of the three regional blocs.
1 July 2009: Rwanda and Burundi join the EAC Customs Union. Official launch ceremonies held simultaneously in the two countries' capitals on 6 July 2009.
20 November 2009: Protocol for the Establishment of the EAC Common Market signed; climax of observance of EAC 10th Anniversary celebrations; laying of foundation stone for EAC headquarters in Arusha.
1 January 2010: EAC's fully-fledged Customs Union takes effect following the end of a five-year transitional period.
3 December 2010: EAC Summit of Heads of State adopts the EAC Anthem.
12 June 2011: Second COMESA-EAC-SADC Tripartite Summit held in Johannesburg, South Africa; agrees to start negotiations for a Grand Free Trade Area among the three blocs.