罗马帝国曾经统治了整个地中海地区。

The Roman ___Empire once controlled the entire Mediterranean region.

这位企业家在二十年内建立了一个横跨多个行业的商业帝国。

The entrepreneur built a business ___empire spanning multiple industries within twenty years.

古罗马帝国曾统治整个地中海地区。

The ancient Roman ___empire once ruled the entire Mediterranean region.