“A nation is constituted by belief.” Explain with example.

A nation is constituted by belief:  

Nations are not like mountains, rivers or buildings which we can see and feel. They are not things which exist independent of the beliefs that people have about them. To speak of a people as a nation is not to make a comment about their physical characteristics or behaviour. Rather, it is to refer to the collective identity and vision for the future of a group which aspires to have an independent political existence. To this extent, nations can be compared with a team.

When we speak of a team, we mean a set of people who work or play together and, more importantly, conceive of themselves as a collective group. If they did not think of themselves in this way they would cease to be a team and be simply different individuals playing a game or undertaking a task. A nation exists when its members believe that they belong together.