The sentence "The lifestyle discovery of Saudi Arabia has changed the society" could be reordered as follows:
"The discovery of Saudi Arabia's lifestyle has brought about a transformation in the society."
This reordering aims to enhance clarity and fluency by placing the subject ("The discovery") at the beginning, followed by the possessive form of "Saudi Arabia" to specify whose lifestyle is being discussed. The phrase "has brought about" emphasizes the ongoing impact of the discovery on the society, providing a more dynamic and nuanced expression. This restructuring also maintains grammatical coherence, ensuring a smoother flow of ideas. In this revised sentence, the focus is on the transformative nature of the lifestyle discovery and its lasting effects on Saudi Arabian society.