national flag

A national flag is a distinctive emblem representing a particular nation. Flags are typically made of cloth and display the insignia of a sovereign state, community, organization, or individual. They are often oblong and attached to a staff. The part nearest the staff is the hoist, and the outer part is the fly.12

Flags have historical significance, originating in ancient China and India, and were used in warfare for identification and as rallying points. In Europe, national flags began to be adopted in the Middle Ages, often based on the symbols of patron saints or heraldic devices. The colors and designs of national flags usually reflect a country's history, culture, or religion. For example, the United States flag's stars represent states, and its stripes represent the original thirteen colonies. Many flags share similarities due to common origins or influences, such as the flags of Chad and Romania, or those of Indonesia and Monaco. The study of flags is known as vexillology.234