Srivijaya was a dominant thalassocratic city-state based on the island of Sumatra, Indonesia, which influenced much of Southeast Asia. Srivijaya was an important centre for the expansion of Buddhism from the 8th to the 12th century. Srivijaya was the first unified kingdom to dominate much of Malay archipelago. In Sanskrit, śrī means "fortunate", "prosperous", or "happy" and vijaya means "victorious" or "excellence".