In line with Polkadot's approach, proposing the closure of Bounties [n.16](https://kusama.subsquare.io/treasury/bounties/16) and [n.21](https://kusama.subsquare.io/treasury/bounties/21). Both bounties are completed, and the curator has been removed due to an expired expiration date without extension.

Please note that the action of closing the previously funded bounty would return any remnant funds on the bounty account to the treasury.

- Problem Statement: Closure of completed bounties [n.16] and [n.21] due to expired expiration date without extension.
- Significance: Returning remaining funds to the treasury and maintaining transparency in fund allocation.
- Proposed Solution: Close bounties [n.16] and [n.21] as they are completed with expired expiration dates.
- Expected Outcomes: Efficient fund management and clear allocation of resources.

#350 Bounty Closure Proposal: n.16 and n.21