Bangladesh is in South Asia, bordering the Bay of Bengal to the south, mostly surrounded by India and bordering Myanmar in the southeast. The national language is Bengali (Bangla) and is spoken everywhere. It's an Indo-Aryan language derived from Prakit, Pali and Sanskrit and written in its own script. Many Bangladeshis only understand limited English such as basic affirmatives, negatives, and some numbers. Learning a few Bengali words ahead of your trip will prove very useful.