I think it’s the spinning wheel.
I believe the answer is: Storage
Our memory is divided in to three parts: Storage, encoding, and retrieval.
Storage is the part where we store all of the new information just after we receive them. These new information later would be encoded to determine whether it's valuable enough for us to keep. If not, these information would be eliminated from the storage.
Anemometer
hope this helps:)
1. Parliamentary system
2. Parliamentary republic
3. Constitutional republic
4. Provisional government
A charter your answer is charter