Who is the author of the book "Our Choice"?

Explanation: The United States remained India's largest trading partner based on bilateral trade value.

Explanation: Zero hour refers to the leftover time after question hour in Indian Parliament. During this time members are allowed to raise matters of importance without giving any prior notice. Zero hour is entirely at the discretion of the Speaker as there is no constitutional provision with regard to this.

Explanation: “Brain drain” is a term used to describe the large-scale migration of skilled human capital that causes a country to lose its innovative capabilities and limits its economic growth.

Explanation: Henry John Temple, 3rd Viscount Palmerston was a British statesman who served twice as a Prime Minister in the mid-19th century. Palmerston dominated British foreign policy during the period 1830 to 1865 when Britain was at the height of its imperial power. He held office almost continuously from 1807 until his death in 1865.