Gampopa, also known as Dakpo Lharje, was a Tibetan Buddhist master who played a significant role in the development and spread of Tibetan Buddhism. He was a disciple of the renowned master Milarepa and is considered one of the most influential figures in the Kagyu school of Tibetan Buddhism.

Gampopa's role in Tibetan Buddhism can be seen in three main areas: his teachings, his lineage, and his impact on the development of Tibetan Buddhism.

Firstly, Gampopa's teachings were instrumental in the spread of Tibetan Buddhism. He is known for his famous text "The Jewel Ornament of Liberation," which is considered one of the most important and influential texts in Tibetan Buddhism. This text presents the teachings of the Buddha in a clear and accessible manner, making it popular among both monks and laypeople. Gampopa's teachings also emphasized the importance of meditation and the cultivation of compassion and wisdom, which are central to Tibetan Buddhist practices.

Secondly, Gampopa's lineage is highly revered in Tibetan Buddhism. He was the founder of the Dakpo Kagyu lineage, which is one of the four main lineages of the Kagyu school. This lineage has been passed down through generations, with each master building upon the teachings of their predecessors. Today, the Dakpo Kagyu lineage is still thriving and has followers all over the world.

Lastly, Gampopa's impact on the development of Tibetan Buddhism is undeniable. He was a key figure in the integration of Indian and Tibetan Buddhist traditions, which led to the formation of the unique and rich Tibetan Buddhist tradition we know today. Gampopa's teachings and lineage have also influenced other schools of Tibetan Buddhism, such as the Gelug and Sakya schools.

Gampopa's role in Tibetan Buddhism is also reflected in his contributions to the preservation of Buddhist teachings. He was a prolific writer and composed many texts, including commentaries on important Buddhist scriptures and teachings. He also established several monasteries, where he trained many students who went on to become great masters themselves.

In conclusion, Gampopa's role in Tibetan Buddhism is multifaceted and significant. His teachings, lineage, and impact on the development of Tibetan Buddhism have left a lasting legacy that continues to influence and inspire practitioners all over the world. His contributions have helped to spread the wisdom and compassion of Tibetan Buddhism, making him a revered figure in the tradition.