1. जलाल-उद-दीन फ़िरोज़ ख़लजी द्वारा स्थापित खिलजी वंश ने 1290 और 1320 के बीच भारतीय उपमहाद्वीप के बड़े हिस्सों पर शासन किया।

2. दिल्ली सुल्तानों द्वारा दासों के उपयोग की राज्य में कुलीनों द्वारा आलोचना की गई थी।

3. सल्तनत के विशाल साम्राज्य में एकता विश्वसनीय प्रशासकों और राज्यपालों पर निर्भर थी।

(B) future - The sentence suggests a hopeful outlook, and "future" is the most appropriate word to indicate a time when things are expected to return to normal.

(B) cleave to - The phrase "tongue seemed to cleave to the roof of his mouth" conveys the idea of sticking or adhering.

(C) purely - The phrase "purely incidental" suggests that any resemblance is entirely accidental, making "purely" the most appropriate choice.

(C) break - The collocation is "break the ice," meaning to initiate a conversation in a social setting.

(A) dominating - The phrase "outstanding and dominating figures" implies that Tagore and Gandhi were influential and had a significant impact.

(B) Immigrant - The sentence describes someone settling in a different country, making "Immigrant" the most appropriate one-word substitute for the underlined group of words.

(D) death - The phrase "risk, uncertainty, and fear of death" completes the sentence appropriately, highlighting a common source of anxiety.