Here is the FIRST sources: https://www.commisceo-global.com/resources/country-guides/bangladesh-guide

https://www.britannica.com/place/Bangladesh/Drainage

Here is the SECOND source: https://www.britannica.com/place/Afghanistan

you only need to pick one part to write this writing assignment, the only thing need to pay attention is, if you pick first sources, there are two articles. if you pick the second. there is one article.