The Tribhuvan Museum contains artifacts related to the King Tribhuvan (1906–1955). It has a variety of pieces including his personal belongings, letters and papers, memorabilia related to events he was involved in and a rare collection of photos and paintings of Royal family members. The Mahendra Museum is dedicated to king Mahendra of Nepal (1920–1972). Like the Tribhuvan Museum, it includes his personal belongings such as decorations, stamps, coins and personal notes and manuscripts, but it also has structural reconstructions of his cabinet room and office chamber. The Hanumandhoka Palace, a lavish medieval palace complex in the Durbar, contains three separate museums of historic importance. These museums include the Birendra museum, which contains items related to the second-last monarch, Birendra of Nepal.
What was the birth year of King Mahendra?
1920

Other widely used alloys that contain zinc include nickel silver, typewriter metal, soft and aluminium solder, and commercial bronze. Zinc is also used in contemporary pipe organs as a substitute for the traditional lead/tin alloy in pipes. Alloys of 85–88% zinc, 4–10% copper, and 2–8% aluminium find limited use in certain types of machine bearings. Zinc is the primary metal used in making American one cent coins since 1982. The zinc core is coated with a thin layer of copper to give the impression of a copper coin. In 1994, 33,200 tonnes (36,600 short tons) of zinc were used to produce 13.6 billion pennies in the United States.
What is zinc coated with to influence the look of pennies?
thin layer of copper

As economic and demographic methods were applied to the study of history, the trend was increasingly to see the late Middle Ages as a period of recession and crisis. Belgian historian Henri Pirenne continued the subdivision of Early, High, and Late Middle Ages in the years around World War I. Yet it was his Dutch colleague, Johan Huizinga, who was primarily responsible for popularising the pessimistic view of the Late Middle Ages, with his book The Autumn of the Middle Ages (1919). To Huizinga, whose research focused on France and the Low Countries rather than Italy, despair and decline were the main themes, not rebirth.
Which author popularized a pessimistic view of the Late Middle Ages in his 1919 book?
Johan Huizinga