The Bronze Age in Korea, which lasted from around 1000 BCE to 300 BCE, marked a significant period of cultural and technological development. During this time, people began to use bronze tools and weapons, which improved agriculture and warfare. The era is characterized by the emergence of complex societies and the construction of large burial mounds, known as tumuli, which often contained rich grave goods. In addition to advancements in metallurgy, Bronze Age Korea saw the rise of distinct regional cultures, such as the Gojoseon kingdom. This period also laid the foundation for later developments in Korean history, including the formation of early states and the spread of shamanistic beliefs, which influenced the spiritual life of the region.