It is amazing to see how the different events in history have influenced and changed the way people have dressed throughout time. Some of the most popular fashions are classic, they can stand the test of time and hardly ever "go out of style", only experiencing minor changes to keep up with the trends. Other clothing items could be considered "fads", styles that are only popular for a short season and then never worn again. Often certain fashion trends are dependent on the tastes of particular groups of people or cliques and are usually associated with social status or cultural preferences like the type of music a person likes. Fashion can also be influenced by world events such as war or the economy. For example, during World War II, people were only allowed a certain amount of fabric so they were forced to create simple outfits that were practical enough for wartime duties. From the 1920s to the 1990s, popular fashions reflected the mood of each decade and showcased changes in society as the styles of clothing and accessories evolved with the times.