现代民族国家通常有共同的语言和文化认同。

Modern ___nation-states usually share a common language and cultural identity.

冰岛是一个典型的民族国家，拥有共同的语言和文化认同。

Iceland is a typical ___nation-state with shared language and cultural identity.

现代民族国家的概念强调单一民族在统一政治实体下的自治。

The concept of modern ___nation-states emphasizes self-governance of a single people under one political entity.