How were inspired by the sense of collective national Unity?

The anti-imperial movements that developed everywhere were nationalist, in the sense that they all struggled to form independent nation-states, and were inspired by a sense of collective national unity, forged in confrontation with imperialism. European ideas of nationalism were nowhere replicated, for people everywhere developed their own specific variety of nationalism. But the idea that societies should be organised into ‘nation-states’ came to be accepted as natural and universal.