Q1. Why was the cotton gin important?
Q2. Which two inventions radically changed the way people communicated with each other?
Q3. What was the first picture ever taken? When?
Q4. How many years did it take to invent the machine gun after the revolver was invented?
Q5. Samuel Morse invented Morse code in 1837. It would become the primary language of telegraphy in the world. It is still the standard for rhythmic transmission of data. How many years did it take to invent Morse code after the first telegraph was invented?
Q6. Eli Whitney popularized the concept of identical parts for a produced item. This is called "interchangeable parts". This made possible faster assembly at a lower price. What else did he invent? When?
Q7. In chronological order, what five inventions aided the manufacture of clothing?
Q8. What was the first recording of a human voice?