Because Dhaka is the capital of Bangladesh, and mostly Developed compared to the other states. People from all over Bangladesh comes to Dhaka for a better life and higher paid jobs, to me that's one of the main reason. :p
Why did you ask such a BIG question?? now were even!!
Dhaka is the capital of Bangladesh. Dhaka is also known as Dacca.
Vivo en Dhaka, Bangladesh. (BEEbaw ain Dhaka, Bangladesh)
The capital of Bangladesh is Dhaka.
Dhaka, Bangladesh
The capital of Bangladesh is Dhaka.
dhaka is the capital of bangladesh
Dhaka (the capital city of Bangladesh).
Dhaka, Bangladesh
Dhaka is the capital of Bangladesh.
Dhaka (formerly Dacca), BD
Bangladesh! ;)
Bangladesh