If the Sanjiv Refresher contains that phrase, it is likely a miscategorized file (someone uploaded an English/GK section inside an SST folder) OR a chapter about "Culture and Entertainment" under the History section (e.g., "History of Clothing" or "Movies and Media" which appears in higher classes).
Sites like Kopykitab offer the 2021 Sanjiv Prakashan e-books for online reading or download. sanjiv refresher class 9 social science pdf 2021