This document discusses national identity and how it can be impacted by migration. It provides examples of Iceland, Singapore, and the UK to illustrate how national identity may be easier to define for some countries compared to others. Iceland is presented as having maintained a strong cultural identity and homogeneity due to its isolated history. In contrast, Singapore is described as a cultural melting pot with multiple influences that make its national identity more diluted. Factors like shared language, heritage, and traditions can contribute to stronger national identities, while mixing of cultures through migration can make identities less clearcut.