1. What is the invention that is ranked number 10 on the list? A. Paper B. Refrigeration C. Plumbing D. Medicine 2. How did the compass change navigation? A. It made it easier to navigate by using landmarks. B. It made it safer to navigate by using the stars. C. It made it easier to navigate by using magnetism. D. It made it safer to navigate by using lodestones. 3. What impact did refrigeration have on the food industry? A. It prevented food from spoiling and developing bacteria. B. It transformed the way we eat and live. C. It changed the way the food industry transports and stores food. D. All of the above. 4. Who is credited with inventing the printing press? A. Johannes Gutenberg B. Alexander Fleming C. Thomas Newcomen D. Samuel Morse 5. What innovation improved living conditions for millions of people across the globe? A. Medicine B. Plumbing C. Engines D. The wheel 6. What was the first group of drugs that fought illnesses like syphilis and strep infections? A. Penicillin B. Contraceptives C. Steam engines D. The wheel

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