Complex sentence: In May 1959 it was announced that the Union would be renamed Union of African States with a flag like that of Ghana "with as many black stars as there were members".
Split into simpler sentences: In May 1959 it was announced that the Union would be renamed Union of African States. When the Union was renamed Union of African States, its flag was specified to be a flag like that of Ghana "with as many black stars as there are members".