Expository writing is fact based so why does it sometimes include more than just facts

There are many reasons why you might want to include more than just facts in an expository writing. While most of your text should be fact-based, sometimes you can elaborate on these facts by adding your opinion. You can also elaborate by using about literary devices that provide vivid descriptions or examples. These elements make a text easier to understand and more enjoyable to read.

explanation:

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recent news about two years ago indicates that a polish forestry student by chance unearthed at a depth of about 40cm (16 inches), during digging in a damp polish forest he found a 13-page manuscript into a thermos flask.

greek jew marcel nadjari was a aischwitz slave who witnessed how the nazi's built big death chambers and crematoriums and told how he was forced to escort fellow jews to the gas chambers. he accounts on this manuscript how the nazi's disguised this chambers to look like showers. also, he describes this place as a process of extermination from the chambers to the trains arriving to take the bodies.