Complex sentence: Malaysia bases its claim on the United Nations Convention on the Law of the Sea's 200 nautical mile rule and in 1979, it published a territorial sea and continental shelf map depicting its claim over the area.
Split into simpler sentences: Malaysia bases its claim on the United Nations Convention on the Law of the Sea's 200 nautical mile rule. In 1979, it published a territorial sea and continental shelf map depicting its claim over the area.