Which of the following examples offers the potential for the greatest political and cultural unity?

a stateless nation such as the Kurds
a nation-state such as Japan
a multinational state such as Russia
a multi-state nation such as the Irish

A nation-state such as Japan has the potential for the greatest political and cultural unity. In a nation-state, the majority of the population shares a common language, history, culture, and political system, which contributes to a greater sense of unity among its citizens. Japan, for example, has a predominantly homogeneous population with a strong sense of national identity and cultural unity.