Why Notebook Paper Has Red Margins 📝 #shorts

Ever wondered why every lined notebook paper has that specific red vertical line on the left side? It’s not an accident and it wasn’t invented for teachers to grade your work. It’s actually a brilliant historical solution designed to protect important human knowledge from hungry rats.

#shorts #funfacts #stationery #historyfacts #notebooksecret #everydayobjects #todayilearned #didyouknow

Видео Why Notebook Paper Has Red Margins 📝 #shorts канала Sushi