Relief and climate are the most important factors affecting the development of any region.
The Himalayan region has high mountains with a steep slope. The climate is cold and the mountains are covered with snow. There is heavy soil erosion and hardly plain land, so agriculture is not developed.
In this mountainous region, it is difficult and expensive to develop transportation facilities. Hence, there is poor development of industries.
Since all above factors are neither suitable for agricultural, industrial or trade development is not seen in the Himalayan region.
