Original sentence: Mithila (), also known as Tirhut and Tirabhukti, is a geographical and cultural region in the eastern part of the Indian subcontinent,  comprising some 13 districts in southeastern Terai of Nepal  as well as most of Northern part of Bihar State in India
Edited sentence: It extends into the eastern Terai of Nepal.Mithila (), also known as Tirhut and Tirabhukti, is a geographical and cultural region in the eastern part of the Indian subcontinent,  comprising some 13 districts in southeastern Nepal, as well as most of Northern part of Bihar State in India