National consciousness in the context of "1383–1385 Crisis"

National identity is a person's identity or sense of belonging to one or more states or one or more nations. It is the sense of "a nation as a cohesive whole, as represented by distinctive traditions, culture, and language".

National identity comprises both political and cultural elements. As a collective phenomenon, it can arise from the presence of "common points" in people's daily lives: national symbols, language, the nation's history, national consciousness, and cultural artifacts. Subjectively, it is a feeling one shares with a group of people about a nation, regardless of one's legal citizenship status. In psychological terms, it is defined as an "awareness of difference", a "feeling and recognition of 'we' and 'they'". National identity can incorporate the population, as well as diaspora, of multi-ethnic states and societies that have a shared sense of common identity. Hyphenated ethnicities are examples of the confluence of multiple ethnic and national identities within a single person or entity.

An interregnum and a war of succession began in the Kingdom of Portugal in 1383 when King Ferdinand I died leaving no sons and ended when King John I was crowned in 1385 after his victory during the Battle of Aljubarrota.

The Portuguese interpret the era as their earliest national resistance movement to counter Castilian intervention, and Robert Durand considers it as the "great revealer of national consciousness".