Title: History of India.
Question: What was the general population's common language ?

Title: The Blitz.
Question: Who told Parliament that after long periods of attacks people would leave the cities for the country? 

Title: Karl Popper.
Question: Which department did Popper found at the London School of Economics?

Title: LaserDisc.
Question:
By 1990, how many American homes were estimated to use LD?