The key answer of exercise 4
The key to exercise solutions in chapter 9C - Lost civilisations for the textbook Solutions Advanced - Workbook with authors Tim Falla and Paul A. Davies from Oxford University Press
Question
Listen and answer the questions.
Answer
- Cambodia, Laos, Thailand and Vietnam
- Between the 11th and 13th centuries.
- They developed a road network, canal system and reservoirs.
- The Thais in 1431.
- There are no historical records so it remains a mystery.
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