Las Vegas is a city in Nevada, United States, known for its vibrant nightlife and entertainment. It is often referred to as 'Vegas' and is the most populous city in the state. The term 'Vegas Introduction' refers to the introduction of Las Vegas to the world, which began in the early 20th century when the city was established as a gambling destination. Since then, it has become a major tourist destination, with many attractions, hotels, casinos, and other forms of entertainment.