11. Indonesia, an archipelagic nation with more than 13, 000 islands, has no external enemies. 12. The total volume occupied by an archipelagic apron is often many times that of the adjacent island. 13. European colonials identify both archipelagic realms as East Indies, Spanish East Indies and Dutch East Indies. 14. Majapahit was a vast thalassocratic archipelagic empire based on the island of Java from 1293 to around 1500. 15. It is an idea of an archipelagic country, a concept that goes back to pre-Islamic times. 16. The archipelagic empires, the Sultanate of Malacca and later the Sultanate of Johor, controlled the southern areas. 17. As an archipelagic country, consisting of more than 13 thousand islands, Indonesia could benefit from such tunnels. 18. Most parts of Indonesia, an archipelagic nation with more than 17, 000 islands, are prone to earthquakes. 19. The Philippines'ocean thermal resource area is 1000 square kilometers, based on the archipelagic nature of the country. 20. Another puzzle some legislators pointed out is the continued delay in the passage of the bill setting the Philippines archipelagic baselines.