The U.S. flag, commonly known as the Stars and Stripes, features 13 horizontal stripes alternating red and white, representing the original 13 colonies. In the upper left corner is a blue rectangle, or "canton," containing 50 white stars arranged in nine rows, symbolizing the 50 states of the union. The red represents valor and bravery, the white stands for purity and innocence, and the blue signifies vigilance, perseverance, and justice. The flag is a symbol of American identity, freedom, and democracy.