1) Hello! What was the invention? 2) It was the radar. A device used to detect objects at a distance. 3) I heard about it. When was it developed? 4) It was developed during the Second World War. 5) That’s very interesting! Who developed it? 6) Several countries worked on it, but scientists in Britain, like Sir Robert Watson-Watt, improved it for military. 7) Wow. I didn’t know about that. How was it used? 8) The radar detected enemy planes and ships. 9) That's amazing! Why was it important? 10) Because the radar changed warfare and help the Allies win. 11) Thanks for sharing! I learned a lot about its importance.

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