The euro crisis has put most people off currency unions. But not in Africa, it seems. In November the leaders of five countries of the East African Community (EAC) agreed to form a monetary union within ten years. A month before West African politicians agreed on a plan to introduce a new shared currency, the eco, over the next few years. It should eventually subsume West Africa’s existing currency bloc—but not its central African cousin.

The leaders of five East African countries have signed a protocol laying the groundwork for a monetary union within 10 years that they expect will expand regional trade. Heads of state of Kenya, Tanzania, Uganda, Rwanda and Burundi, which have already signed a common market and a single customs union, say the protocol will allow them to progressively converge their currencies and increase commerce.