What was the Southeast Asian empire, based on Sumatra, that controlled maritime trade through the Strait of Malacca and influenced southern Thailand?

• A Majapahit
• B Ayutthaya
• C Srivijaya ✓
• D Langkasuka

The Srivijaya Empire dominated maritime Southeast Asian trade from the 7th to 13th centuries, with its influence extending into southern Thailand through the Ligor (Nakhon Si Thammarat) region.