Read the passage and write A, B, or C to indicate the paragraphs which the following details belong to.

Human curiosity has led to many inventions in the history of mankind. Following are three of the most important inventions that changed the world.

A. The printing press

The printing press was invented by German inventor Johannes Gutenberg in the 15^th century. This invention increased the speed at which books could be copied and, therefore, boosted the spread of knowledge. Thanks to the printing press, information could be shared more quickly and more easily.

B. The light bulb

In 1806, Humphry Davy, an English inventor, introduced the first electric arc lamp, which burned too brightly and quickly. Around seven decades later, in 1879, the first long-lasting light bulb that could burn for nearly 14 hours was invented and registered by Thomas Edison, a famous US inventor. Since it was created, the light bulb has replaced natural light, helped lengthen the average workday, and allowed people to travel more safely in the dark.

C. The telephone

Although several inventors worked on the idea at the same time, Alexander Graham Bell, a Scottish inventor, was the first one to patent his telephone on March 7^th, 1876. The first phone call was made a few days later when Bell called his assistant, saying “Mr. Watson, come here. I want to see you.” The invention of the telephone transformed the way we communicate. Most importantly, it allowed immediate contact in emergencies and long-distance communication.

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