Kenya, Uganda, and Tanzania, which had close relations with EAMA during the time, signed the Arusha Agreement, and through this, they took part in the Yaounde Agreement.
당시 EAMA와 밀접한 관계에 있던 케냐와 우간다, 탄자니아는 아루샤 협정을 체결하였고, 이를 통해 야운데 협약에 참여하였다.