karakoram
The Rocky Mountains
The Himalayas lie between India and China.
West Siberian Plains
The West Siberian Plain.
I am sure most of it's part lies in Nepal. It lies in the north east of Nepal, only a very little part of it lies in Tibet. Himalayas are seen from Tibet but they lie in Nepal.
North West
portugal
The Great Plains
The Blue Mountains lie just west of Sydney, New South Wales, Australia. The Blue Mountains are part of the Great Dividing Range, which extends down the eastern coast of the continent.
The rocky mountains lie in the middle of the country.
The Tigris and Euphrates Rivers. These two rivers lie just west of the Zagros Mountains and flow from Anatolia southeast to the Persian Gulf. (sources: Wikipedia, my 6th grade S.S. homework)
Chad is bounded . . . -- on the north by Libya, -- on the south by Cameroon and the Central African Republic, -- on the east by Sudan, -- and on the west by Niger and Nigeria.