Historical Identity
Vietnam, like most Southeast Asian countries is a natural nation-state. This means that because of a long history of centuries (nearly 1000 years) defending a particular set of borders and establishing a particular national identity, the concept of a "Vietnamese Nation" was more or less universally accepted both by Kinh People (the ethnic majority of Vietnam), by Non-Kinh who had historically been part of Vietnam, and by Non-Kinh who were outside of Vietnam, like the Cambodians, Laotians, and Thais.
What really led to the development of the Vietnamese identity was the constant attempts by China to invade and overrun Vietnam. This created a strong level of patriotism and a unique identity as the "resistance to the Chinese". (Such kinds of resistance-based identity are common and very powerful, such as the Irish Identity, the Kosovar Identity, the Indonesian Identity, and the US Identity.) When compared to the neighboring Laotians and Cambodians, the Vietnamese embrace of more Chinese-style religion (Daoism, Ancestor Worship, and some aspects of Buddhism), made the Vietnamese distinct from the Theravada Buddhism that prevailed among the other two groups.
Modern Vietnam
Modern Vietnamese nationalism and the communism is a direct result of resistance to the modern French Occupation in Indochina. Ho Chi Minh and other Vietnamese saw communism as a form of liberation for the Vietnamese people who had been ravaged by the exceedingly capitalistic removal of their resources for the French industrial machine. The First Indochina War, when Vietnam pushed for independence from the French led to the cultivation of a new Vietnamese resistance-based identity on top of the resistance to China. After this, the war between North Vietnam and the United States, in order to reunify the country, also led to a surge in nationalism and a strengthening of the Vietnamese identity.
Nationalism
As a result of the spirit of the French Revolution the Greeks developed a strong feeling of nationalism which resulted in a program to win thier independence from the Turks.
Youngsters these days don't have the spirit of nationalism partly because they are not exposed to basic citizenship classes in school or saying the pledge of allegience in schools.
"the spirit of nationalism is what drived the Americans during the American revolution to satnd and fight. it inspired the founding fathers to right the decleration and to form a constitution." - Frankie russo
nationalism developed into such a powerful sort of from the affect from accounting
There wasn't really a 'time period' of Nationalism . It began as each country developed its own identity .
Nationalism
Sir Syed Ahmed Khan used education and the Muslim faith to empower Indians thus infusing the spirit of nationalism.
Mexico and Easter Island
The characterization of the daemon as a dangerous spirit was developed by Judaism and Christianity doctrines. Walter Burkert and Hesiod suggest that a daemon can also be a good spirit.
A heightened spirit of nationalism!
Nationalism inspired the creation of new countries because it caused kingdoms to join together to achieve independence and developed a sense of pride.