Art and Culture

With reference to ancient India (600-322 BC), consider the following pairs:
Territorial Region : River flowing region in the region
I. Asmaka : Godavari
II. Kamboja : Vipas
III. Avanti : Mahanadi
IV. Kosala : Sarayu
How many of the pairs given above are correctly matched?

Who among the following led a successsful military campaign against the kingdom of Srivijaya, the powerful maritime state, which ruled the Malay Peninsula, sumatra, java and the neighbouring islands?