Problem: The Austrian engineer Paul Eisler invented the printed circuit as part of a radio set while working in England around 1936. Around 1943 the USA began to use the technology on a large scale to make proximity fuses for use in World War II. After the war, in 1948, the USA released the invention for commercial use. Printed circuits did not become commonplace in consumer electronics until the mid-1950s, after the Auto-Sembly process was developed by the United States Army. At around the same time in Britain work along similar lines was carried out by Geoffrey Dummer, then at the RRDE.
When was the printed circuit released for commercial use in the U.S.?
---
Answer: 1948

Problem: 181st Street is a major thoroughfare running through the Washington Heights neighborhood. It runs from the Washington Bridge in the east, to the Henry Hudson Parkway in the west, near the George Washington Bridge and the Hudson River. The west end is called Plaza Lafayette.
Which river does 181st Street run near?
---
Answer: Hudson River

Problem: In terms of impact on events, it was more than Napoleon's personality that took effect. He reorganized France itself to supply the men and money needed for great wars. Above all he inspired his menWellington said his presence on the battlefield was worth 40,000 soldiers, for he inspired confidence from privates to field marshals. He also unnerved the enemy. At the Battle of Auerstadt in 1806, King Frederick William III of Prussia outnumbered the French by 63,000 to 27,000; however, when he mistakenly was told that Napoleon was in command, he ordered a hasty retreat that turned into a rout. The force of his personality neutralized material difficulties as his soldiers fought with the confidence that with Napoleon in charge they would surely win.
Who said that Napoleon's presence on the battlefield was worth 40,000 soldiers?
---
Answer:
Wellington