Carte blanche (from French carte blanche — "white card") is complete freedom of action, permission to act at one's discretion without restrictions. If you have been given carte blanche, it means: do as you see fit, we trust you.
The expression originates from France. In the 17th–18th centuries, the French used carte blanche — a signed but blank sheet of paper that another person had the right to fill out independently. This symbolized trust and authority.
This term is often used when someone is entrusted with an important task but is not instructed on how to carry it out. For example, if your friend has been given carte blanche to organize a party, it means they can decide how the celebration will look from start to finish - what dishes will be served, the music, the venue, etc.
Carte blanche is not just a piece of paper; it is also about trust and confidence in another person's abilities. It is when someone believes that you will do everything right, even without clear instructions. Sometimes, such an attitude opens up a great space for creativity and innovation.