The term 'BOUNDED BY' can be summarized by three crossword solutions: Laos (4 letters), SECTOR (6 letters), and ASIA (4 letters). Laos is a landlocked country in Southeast ASIA, bordered by Myanmar, Thailand, Cambodia, Vietnam, and China. SECTOR is an area or division of a larger region, and in this case it is likely referring to a SECTOR of ASIA. ASIA is the largest continent on Earth, and is bounded by the Pacific Ocean, Indian Ocean, Arctic Ocean, and Mediterranean Sea.