The Metric System is a decimal-based system of measurement used around the world. It includes units like meters for length, liters for volume, and grams for weight. This system is designed to be simple and consistent, making it easier to convert between units by using powers of ten. For example, 1,000 grams make a kilogram, and 100 centimeters make a meter. Many countries have adopted the Metric System because it simplifies calculations and reduces confusion. It is widely used in science, medicine, and everyday life. Even though the United States primarily uses the Imperial System, the Metric System is still important for international trade and communication.