About the invetion of soap in ancient Egypt: edit my paragraph?

Hello, I am an international student.
I just wrote a paragraph about the invetion of soap in ancient Egypt. Please help me edit the following paragraph. Any help will be greatly appreciated.

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The history of the discovery of soap can be traced back to the ancient Egypt. 5000 years ago, one day, the king of Egypt, Khufu, invited guests to attend a luxurious banquet. At that moment, the grand kitchen was abuzz with noises, and all the cooks were busy preparing for the meals. Unfortunately, one of the cooks accidentally knocked down a whole pot of animal oil, which splashed onto the ground. Fearing to be reprimanded by the king, all the cooks quickly mixed the oil with some charcoals so as to clean the ground. While washing their hands after cleaning up the floor, they were startled to discover that those hard-to-clean stains on their hands vanished gradually. Exhilarated, the cooks reported the discovery to the king, who later praised such a convenient way of washing, and ordered the cooks to mix plenty of the animal grease with charcoals so that the guests could wash their hands after the banquet.

Sorry if the first post wasn't much a help. Here some of my suggestions, just some vocabulary change that fit with the style of your writing. Good luck and hope it helped.

I just wrote a paragraph about the inven tion of soap in ancient Egypt. Please help me edit the following paragraph. Any help will be greatly appreciated

The history of the discovery of soap can be traced back to the ancient Egypt.
--> either The history of soap or The discovery of soap. Pick one.

5000 Five thousands years ago, one daythe king of Egypt, Khufu, the king of Egypt , invited guests to attend a luxurious banquet. At that moment,T he grand kitchen was abuzz with noises, and all the cooks (chefs )were busy preparing for the meals. Unfortunately, one of the cooks accidentally knocked down a whole pot of animal oil, which splashed onto the ground. Fearing to be reprimanded (rebuked ) by the king, all the cooks quickly mixed the oil with some charcoals so as to clean the groundfloor . While washing their hands after they have done cleaning up , they were startled to discovered that those hard-to-clean stains on their hands vanished gradually . Exhilarated, the cooks reported the discovery to the king, who later praised such a convenient way of washingthe new invention and ordered the cooks to mix plenty of the animal grease with charcoals so that the guests could wash their hands after the banquet.

Thank you, Tan Vi.

Actually, I am writing this paragraph as practice for the SAT Essay. Therefore, I think it might need to sound more academic.

Could you help me again to improve the vocabulary level so that the paragraph will sound, well, more academic?

Hmm I never know SAT ask this kind of question, they usually ask about a moral reflect or national issues.

Yeah, you're right. But they ask question like such:
" Are all important discoveries the results of focusing on one subject"
So, I use the story about the discovery of soap to illustrate that some discoveries actually result from accidents or luck.