question:
It remains a vital activity by ground forces and includes camouflage and concealment to avoid detection by reconnaissance and attacking aircraft.
Which group is heavily responsible for passive air defence?

answer: yes

question:
After his death, exploration continued; Bartolomeu Dias (d. 1500) went around the Cape of Good Hope in 1486 and Vasco da Gama (d. 1524) sailed around Africa to India in 1498.
What did Christopher Columbus discover in 1492?

answer: no

question:
Napoleon III, since the Crimean War Britain's closest ally, visited London in April 1855, and from 17 to 28 August the same year Victoria and Albert returned the visit.
Victoria and Albert were the guests of honor at a large ball that took place where?

answer: no

question:
She hated Conroy, and despised "that odious Lady Flora", because she had conspired with Conroy and the Duchess of Kent in the Kensington System.
Why did Victoria hate Sir Conroy and Lady Flora?

answer:
yes