In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

What country do you think starts with a T ?, Context: The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by the atmospheric circulation itself, the desert is made even drier by his geographical configuration and location. Indeed, the extreme aridity of the Sahara can't be only explained by the subtropical high pressure. The Atlas Mountains, found in Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier causing a strong rain shadow effect on the leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates.
Tunisia

What is needed to prove the theory?, Context: In the early 11th century, the Muslim physicist Ibn al-Haytham (Alhacen or Alhazen) discussed space perception and its epistemological implications in his Book of Optics (1021), he also rejected Aristotle's definition of topos (Physics IV) by way of geometric demonstrations and defined place as a mathematical spatial extension. His experimental proof of the intromission model of vision led to changes in the understanding of the visual perception of space, contrary to the previous emission theory of vision supported by Euclid and Ptolemy. In "tying the visual perception of space to prior bodily experience, Alhacen unequivocally rejected the intuitiveness of spatial perception and, therefore, the autonomy of vision. Without tangible notions of distance and size for correlation, sight can tell us next to nothing about such things."
vision

What kind of effect did Britain have during the revolution?, Context: With the advent of the Industrial Revolution, Britain surged ahead of its European rivals. Demand for Indian commodities was boosted by the need to sustain the troops and the economy during the war, and by the increased availability of raw materials and efficient methods of production. As home to the revolution, Britain experienced higher standards of living. Its spiralling cycle of prosperity, demand and production had a profound influence on overseas trade. The company became the single largest player in the British global market. William Henry Pyne notes in his book The Microcosm of London (1808) that:

profound influence on overseas trade