Nationalism is defined as the preservation of a country’s cultural heritage and its existence as an independent nation without any form of interference from other countries. It fosters peace and synergy between the different ethnicities and helps in the protection of interest of the country.National Flags, Anthems are components of nationalism.
China, Estonia and India are examples of countries affected by nationalism.
During the hot summers, the gulf of Mexico keeps the areas to its east cool, by creating a strong current of air that constantly refreshes it. Hope this helps!