Complex sentence: In March 1938, the British government announced that the treaty ports would be handed over unconditionally, and on 11 July 1938, the defences at Cork Harbour were handed over to the Irish military authorities at a ceremony attended by Taoiseach Éamon de Valera.
Split into simpler sentences: In March 1938, the British government announced that the treaty ports would be handed over to Ireland unconditionally. On 11 July 1938, the defences at Cork Harbour were handed over to the Irish military authorities at a ceremony attended by Taoiseach Éamon de Valera.