Question

which region is called terai region

Answer 1

hey!
here is your answer
the terai region is a natural lowland region in Southern Nepal and Northern India that lies south of the Himalayas ,Siwalik hills and north of Indo - Gangetic plain
hope it helps you
have a great day ahead

Answer 2

terai is a plain areas in nepal which is also known as Madesh.
it has borders with only india.
terai have places like - janakpur, nepalganj, birganj, biratnagar, Dharan, Lumbini and etc.....
hope it helps☺☺