Question 1 from 11: In what year were launched the first cards or "plastic money" as they were called?
Question 2 from 11: American physicists John Bardeen, Walter Brattain and W. Shockley made the first transistors that functioned just like the thermo-ionic valves but they were smaller and were consuming much less. In what year did the first transistors appeared?
Question 3 from 11: Clarence Birdseye produced the first frozen food in the world. What whas the year when this happened?
Question 4 from 11: In what year did German car engineer Karl Benz built the first car?
Question 5 from 11: When did the South African cardiologist Christiaan Barnard made the first heart transplant?
Question 6 from 11: In what year was the first skyscraper built and where?
Question 7 from 11: When and where was the first underground in the world?
Question 8 from 11: In what year was the airplane invented by Wilbur and Orville Americans known as the Wright Brothers?
Question 9 from 11: The american, Thomas Adams made the first time chewing gum based on a recipe of Maya Indians. In what year was chewing gum invented?
Question 10 from 11: The German chemist Felix Hoffman invented aspirin to try to treat his father's rheumatism. In what year was aspirin invented?
Question 11 from 11: The German chemist Felix Hoffman invented aspirin to try to treat his father's rheumatism. In what year was aspirin invented?