Final answer:
The concept that people with common ethnicities, religions, and languages should be able to create a state and govern themselves is a fundamental idea in the study of Nationalism.
Step-by-step explanation:
The concept that people with common ethnicities, religions, and languages should be able to create a state and govern themselves is a fundamental idea in the study of Nationalism.
Nationalism is a political ideology that emerged in the 19th century, as nations sought to establish their own governments and assert their identity based on shared ethnicity, religion, or language. This movement led to the creation of nation-states, where a homogeneous group of people govern themselves within defined borders. Examples of nationalist movements include the unification of Germany and Italy.
The desire for self-governance based on common identity can also be seen in more recent instances, such as the establishment of Israel as a Jewish state. However, it's important to note that not all nationalist movements have been successful, and the notion of a nation-state can be complicated by issues of diverse populations within a region.