History

The Battle of Plassey was fought in 1757, marking a significant event in Indian history where the British East India Company defeated the Nawab of Bengal, leading to British dominance in India.

Denmark ended its colonial involvement in India by selling the rights to the Nicobar Islands to the British on October 16, 1868. This transaction marked Denmark's exit from Indian colonial affairs, making option C correct.

Habibullah Khan was the Ameer (Emir) of Afghanistan during World War I, ruling from 1901 to 1919. He maintained Afghanistan's neutrality during the war.

The A Sau Valley was a significant strategic location during the Vietnam War, notably the site of intense battles such as the Battle of A Sau in 1966. The other valleys listed were less prominent or not widely recognized as key strategic points in the war.

The Hundred Years' War (1337-1453) was a series of conflicts primarily between the kingdoms of England (Britain) and France over territorial claims and the right to the French throne.

Great Britain was formed by the union of England and Scotland in May 1707 through the Acts of Union, creating a single kingdom.

Between 1347 and 1351, Europe was devastated by the Black Death, a pandemic of bubonic plague caused by the bacterium Yersinia pestis. It is historically known as one of the deadliest pandemics in human history.

William Howard Taft is the only person to have served both as President of the United States and as Chief Justice of the US Supreme Court, making option A correct.

Tanks were first employed in combat during the Battle of the Somme in World War I, specifically in 1916. The other battles listed occurred before tanks were invented.

"Medieval India under Mohammedan Rule (712-1764)" was written by Stanley Lane Poole, a noted historian specializing in Islamic history in India. This makes option A the correct answer.